Jude worked constantly on the salvaged machine parts despite his broken leg. Flynn served as his hands, following detailed instructions. Clara ran between them and Chamberlain, gathering supplies.

“Mrs. Thornton?” she asked on July 5th.

“No sign. We’ve searched everywhere. It’s as if she’s vanished.”

“She hasn’t vanished. She’s waiting for us to leave.”

By evening, the beacon was ready—a crude brass cylinder housing the repaired caesium oscillator, connected to a telegraph battery through salvaged components. When Jude activated it, the oscillator hummed to life.

“Is it working?” Flynn asked.

“The signal is transmitting. If Papa’s monitoring…” Jude shook his head. “All we can do is wait.”

“How long?”

“Hours. Days. Maybe—”

A flash of light cut through the barn.

Brilliant white radiance filled the hayloft. When Clara lowered her hand, a figure stood in the center of the light.

“Papa!”

He looked exactly as she remembered—wild white hair, wrinkled face, workshop apron splattered with grease.

“Three of my favorite people!” His voice bellowed. “I found you.”

Clara threw herself into his arms. Flynn and Jude were right behind her.

“How long?” Clara asked.

“Three weeks. The longest of my life.” Papa released them, crouching beside Jude. “You’re hurt.”

“It’s healing.” he said

“Mrs. Thornton is here,” Clara said. “She came to change history.”

Papa’s expression went cold. “Margaret. I should have known.” He stood. “Where is she?”

“We destroyed her machine, but she escaped.”

“Then she’s stranded. Without equipment, she can’t do more damage immediately.” His voice was grimly satisfied. “I’ll deal with her after I get you home.”

“Can you open a window for all of us?”

“It’s already open—but it won’t hold long. We need to go now.”

They made their way outside. The window hung in the farmyard—a shimmering rectangle showing Papa’s workshop in 2025.

“Martins.”

They turned. Chamberlain stood at the edge of the property, Mrs. Weikert beside him.

“You’re leaving,” Chamberlain said.

“We have to.” Clara felt tears coming. “But we won’t forget you.”

“Nor we you.” Chamberlain extended his hand to Papa. “You’ve raised remarkable grandchildren.”

“They come by it honestly.” Papa shook his hand. “Thank you for protecting them.”

Flynn stepped through the window first, vanishing into 2025. Then Jude. Clara paused at the threshold for one last look.

Mrs. Weikert waved. Chamberlain touched his hat in salute. And the fields of Gettysburg stretched out under summer stars, quiet at last.

Clara stepped through.

The workshop looked exactly the same.

Home.

Papa closed the window and turned to face them. “Now. Tell me everything.”

They did—the whole story. Papa’s face grew darker with each detail.

“Margaret was always brilliant,” he said when they finished. “Too brilliant for her own good. She became convinced her way was the only way.”

“She’s still back there,” Jude said. “Stranded.”

“Without her machine, she’s trapped. But she won’t stay trapped forever—Margaret is resourceful.” Papa’s voice was firm. “But dealing with her is my responsibility now, not yours.”

“But—”

“No buts, Clara. You’ve saved President Lincoln and protected history. Let that be enough.”

Clara wanted to argue, but she was exhausted. They all were.

“What happens now?” Flynn asked.

“You go home to your parents. Rest. Recover.” Papa smiled. “And then, when you’re ready, we’ll talk about what comes next.”

“What does come next?”

“That’s up to you. Time travel is dangerous and unpredictable. But it’s also necessary—there are things in history that need protecting, mysteries that need solving.”

“You need us,” Clara said slowly.

“I need people I can trust. People who are brave and clever and good.” Papa looked at each of them. “People like you.”

“We’ll think about it,” Clara said.

They walked out into the summer evening—their own time, their own world. The farmhouse lights glowed warmly. Their parents’ car was in the driveway.

“Do you think he’s right?” Flynn asked. “That we’ll do this again?”

Clara looked back at the workshop. “I don’t know. But whatever comes next, we’ll face it together.”

She smiled.

“That’s what Martins do.”

THE END

…for now.

Epilogue: Echoes in Time

Six months later

Clara was finishing homework when the letter arrived.

Ordinary envelope, ordinary stamp. But the return address made her heart stop:

J.L. Chamberlain Brunswick, Maine November 1863

She tore it open.

Dear Miss Martin,

I hope this finds you well. Sending correspondence across time is something I never imagined attempting, but your grandfather assures me it is possible.

The mystery we uncovered is not yet solved. Mrs. Thornton remains at large—sightings in Richmond, Atlanta, even London. She appears to be rebuilding her network.

But that is not the true reason for this letter.

Last week, my scouts found something buried near the Round Tops—a brass cylinder containing a message in Mrs. Thornton’s handwriting:

“The first attempt failed. The second will not. Look to Ford’s Theatre.”

I know what happened at Ford’s Theatre, Miss Martin. You told me yourself. I fear Mrs. Thornton has abandoned subtle manipulations for something more direct—ensuring Lincoln’s assassination happens sooner, or differently, with consequences we cannot foresee.

I cannot stop her alone. But you and your brothers have proven yourselves capable of feats I would not have believed possible.

If you can find a way to return, please know that I will be waiting. That history itself will be waiting.

Some mysteries can only be solved by those who walk between times.

Your friend, Joshua Lawrence Chamberlain

Clara read the letter three times. Then she called Flynn.

“Family meeting. Tonight. Papa’s workshop.”

“What happened?”

“Chamberlain sent a letter. Mrs. Thornton is planning something big.”

Clara folded the letter carefully and went to pack her bag.

History was calling.

Chapter Eight: Independence Day

Sun, 01 Feb 2026 14:04:24 +0000

July 4th, 1863, dawned clear and hot.

Clara hadn’t slept. The asset—whoever Mrs. Thornton had recruited to deliver her documents to Lincoln—was still unknown. And the President would arrive within hours.

“We watch everyone,” Clara told Chamberlain. “Every person who gets close to Lincoln. Every document that changes hands.”

The ceremony was held in the town square, thousands gathered to honor the dead and celebrate victory. Lincoln himself was taller than Clara expected, his face lined with weariness, his dark eyes missing nothing.

The speeches began. General Meade spoke of bravery. General Howard described the victory’s significance. Clara watched every face, every movement.

Then Lincoln rose to speak.

His voice carried across the square—words about sacrifice and unity that Clara half-remembered from history class. And as he spoke, she saw it.

A young officer edging through the crowd toward the platform. His movements too purposeful, too directed. He was carrying something.

“Flynn. Two o’clock. The lieutenant.”

Flynn’s eyes found him. “He’s got documents.”

Clara didn’t hesitate. She pushed through the crowd, closing the distance. The officer reached the platform’s edge just as Lincoln finished.

“Mr. President! Documents from the War Department! Urgent!”

Lincoln’s hand reached out—

Clara crashed into the officer, sending them both sprawling. The portfolio flew from his hands, papers scattering everywhere. Guards rushed forward.

“He’s an assassin!” Clara shouted. “Check the documents!”

Chaos erupted. Guards held them both at gunpoint while soldiers gathered the papers. Then Chamberlain appeared, holding Papa’s notes.

“Sir, these papers aren’t from the War Department. They’re fabrications from the future—designed to manipulate your decisions.”

Lincoln read everything in silence—the forged letter, the temporal mechanics notes, the intercepted messages. Then he looked at Clara.

“You’re one of the travelers from another time.”

“Yes, sir.”

“And you came to protect me?”

“To protect history, sir.”

Lincoln smiled. “Then perhaps we should talk.”

In a small room in the Gettysburg town hall, they told Lincoln everything. The time machine. Mrs. Thornton. The paradox. The President listened without interrupting.

“This Mrs. Thornton believed she was fixing history,” he said finally. “Making a better future.”

“She was wrong,” Clara said firmly.

“Perhaps. But history is not simple, children. Who can say with certainty what path leads to the best outcome?”

“We know the Union wins,” Jude said. “We know slavery ends. We know the nation survives. Those are facts worth protecting.”

Lincoln smiled that weary, wondering smile. “You remind me of my own sons. Young, fierce, absolutely convinced the world can be made better.” He stood. “Perhaps that’s what we need most.”

“What will you do with the documents?” Clara asked.

“Destroy them. Such things would only cause confusion.” He moved to the door. “As for Mrs. Thornton—I’ll have my people watch for her. But I suspect she’s retreated to try again.”

“We’ll stop her,” Clara said. “Whatever it takes.”

“I believe you will.” Lincoln paused. “But remember—this is not your battle to fight permanently. You have your own future to return to. History will remember this day as a victory. Let it remember you as heroes who went home.”

He left. The room fell silent.

“He’s right,” Flynn said. “We need to focus on the beacon. Get home.”

Clara wanted to argue. But looking at Jude’s pale face, at everyone’s exhaustion…

“Okay. We focus on going home.”

“And if Mrs. Thornton tries anything else?”

“Then we stop her again. That’s what Martins do.”

Chapter Seven: The Thornton Farm

Thu, 29 Jan 2026 19:39:20 +0000

The sun was setting as they approached the Thornton farm.

It lay hidden in a hollow between two hills, a small white farmhouse with smoke rising from the chimney. Charlie, the Confederate drummer boy, had given them the name: Margaret Thornton. M.

“She’s home,” Jude said quietly.

They’d left Charlie at the prisoner camp with strict instructions to tell no one. General Chamberlain had provided horses and a pass through Union checkpoints, though he expected a full report by morning.

The front door opened before they reached the porch.

The woman who stepped out was perhaps sixty, her gray hair pulled back severely, her face lined with intelligence and calculation.

“I wondered when you’d come,” Margaret Thornton said. “The Martin children. I’ve been expecting you.”

The interior of the farmhouse was surprisingly technological. Strange devices cluttered every surface, and a large humming machine dominated the back wall.

“You’re from the future,” Jude said.

“2039, to be precise. I was a historian—specializing in the Civil War and time travel.” Mrs. Thornton settled into a chair. “Your grandfather and I were colleagues once, before our disagreements became irreconcilable.”

“The Thornton Paradox,” Jude said. “Papa named it after you.”

“After my research, yes. William sees time travel as a tool for observation. I see it as something more—a tool for correction.”

“Correction of what?”

“History’s mistakes.” Her eyes gleamed. “The Union victory set in motion a century of suffering. I came back to give the Confederacy a fighting chance—to change the trajectory.”

“By preserving slavery?” Clara felt sick.

“By creating a different path. A Confederate victory would have led to negotiated peace, gradual modernization.” Mrs. Thornton’s voice was passionate. “I’ve studied the alternatives. My way leads to a better future.”

“That’s insane,” Flynn said.

“Your grandfather thought so too. That’s why he sent you to interfere.” She smiled coldly. “But he made mistakes. Sent you to the wrong moment.”

“The forged letter,” Jude said. “The assassination warning—you wrote it to distract us.”

“A necessary misdirection while I completed my real work.” She shook her head. “It didn’t work as well as I’d hoped. Lee lost anyway.”

“Then what’s Operation Independence?”

Mrs. Thornton moved to the humming machine. “Tomorrow’s finale. Not assassination—revelation. President Lincoln will receive documents from the future, proving that Union victory leads to a century of division. Documents that might convince him to seek peace instead.”

Clara’s mind raced. This wasn’t murder—it was manipulation. Even if they stopped her tomorrow, she’d simply try again. Unless…

“Your machine,” Clara said. “If we destroy it, you’re stranded. No more messages. Your plan falls apart.”

Mrs. Thornton laughed. “You’re welcome to try.”

Clara drew Chamberlain’s pistol. Mrs. Thornton lunged for the controls. Flynn dove forward. And Jude, acting on instinct, grabbed a heavy brass cylinder and hurled it at the machine’s central housing.

The impact rang like a bell. The hum rose to a scream.

“No!” Mrs. Thornton shouted. “You fools!”

The machine exploded.

Clara woke to ringing ears and destruction.

The farmhouse was demolished—walls collapsed, roof caved in, Mrs. Thornton’s machine reduced to twisted metal. But Flynn was alive, bleeding from a cut on his forehead. And Jude—pinned under a beam, his leg bent at a terrible angle, but breathing.

“Mrs. Thornton?” Flynn asked as they freed Jude.

Clara looked around. The woman was gone.

“We need to get back,” Jude gasped. “Tell Chamberlain. The documents she was planning to give Lincoln—they might still be out there.”

They carried Jude to the horses and rode for the Weikert farm, knowing they’d stopped Mrs. Thornton’s immediate plan but not the woman herself.

And somewhere out there, her “asset” was still waiting.

Chapter Six: The Mysterious M

Tue, 27 Jan 2026 19:58:07 +0000

Jude woke to the smell of death—the bodies were still being collected from the fields, wagon after wagon heading to the makeshift graves being dug beyond the ridge.

He tried to focus on the machine parts.

Clara and Flynn had spread them across the hayloft floor in careful arrangement but the view was not encouraging: of the thirty-seven pieces they’d recovered, only eighteen seemed functional.

“Can we make it work?” Clara asked.

“Maybe.” Jude turned the caesium oscillator in his hands, studying the crack in its housing. “If I can repair this, and if the stabilizer functions, and if we can improvise a power source… we might be able to build a beacon – It’s not a time machine but it could signal Papa. We’d have to keep it running for days though.”

“We might not have that long,” Flynn warned.

“I know.”

General Chamberlain arrived at midmorning, his face drawn but his eyes alert. He’d been up all night, he explained, coordinating the aftermath of the battle—organizing burial details, securing prisoners, preparing for Lee’s expected retreat.

“I have a letter,” he said. “This was found on a Confederate courier killed during yesterday’s fighting. The courier was trying to reach Richmond—probably with reports of the battle’s outcome. “

He handed the envelope to Jude. Inside was a single sheet of paper, covered in the same angular handwriting as the previous message:

The assault has failed. The window for Operation Independence is closing. The visitors must be eliminated before July 4th. Use the asset.

—M

“The asset,” Flynn repeated. “What does that mean?”

“I don’t know. But there’s more.” Chamberlain’s voice dropped. “I made inquiries through my intelligence contacts. ‘M’ appears in several intercepted Confederate communications—always as an initial, always connected to unusual references. Mentions of ‘temporal events.’ References to ‘visitors from beyond.’ Whoever this person is, they’ve been coordinating something for months.”

“A spy network?”

“Something larger. Something that reaches high into the Confederate command structure.” Chamberlain met their eyes. “I believe we’re dealing with someone who has knowledge similar to yours. Someone who understands time travel.”

Clara felt a chill run down her spine. “Another traveler. Someone working with the Confederacy.”

“But why?” Jude asked. “If they’re from the future, they know the South is going to lose. Why would they—”

“If you could alter history,” Chamberlain said slowly, “if you could prevent the Union victory at Gettysburg, or assassinate President Lincoln, or somehow tip the balance of this war… the consequences would be unimaginable.

“And M is trying to make that happen,” Flynn said.

“It appears so.”

Jude was quiet for a long moment, his mind racing. Then: “But what about the letter Clara found. The forged assassination warning.”

“It was meant to distract us.

Clara’s eyes widened. “Lincoln. Tomorrow. July 4th. He’s coming to commemorate the victory.” Clara’s voice was urgent. “What if the assassination warning isn’t fake? What if M wants us to think it’s a distraction so we’ll ignore it—and then they’ll actually kill Lincoln?”

“A double-bluff,” Jude breathed. “Make us believe the threat is fake…”

“So we won’t stop the real one.”

Chamberlain’s face had gone pale. “I need to alert General Meade. If there’s even a chance—”

“Wait.” Jude grabbed his arm. “If we alert everyone, M will know. They’ll change their plan, go underground. We need to find M first. Tonight. Before Lincoln arrives.” Jude’s jaw was set. “The letter mentions an ‘asset.’ Someone M is counting on to do the actual killing. If we can find the asset, we find M.”

“That’s an enormous risk… You have until dawn. If you haven’t found anything by then, I’m alerting the full command structure.” He pulled a pistol from his belt and handed it to Jude. “I hope to God you know what you’re doing.”

“So do I,” Jude said quietly. “We can start with the confederate prisoners… but there’s five thousand of them”

Flynn had a different idea.

“The drummer boy,” he said. “Charlie. The one who carried my message to Clara and Jude. He’s Confederate. He moves between the lines. If anyone knows about secret operations…”

“He’s a child,” Clara objected. “He can’t be more than twelve.”

“So are we. Practically.” Flynn met her eyes. “And he’s already helped us once.”

After two hours of searching, they finally located him in a small barn on the outskirts of town.

“I remember you,” Charlie said when Flynn approached. “The future boy. Your message got through okay?”

“It did. Thank you.”

“I need to ask you something else,” Flynn said. “Something important. Have you ever heard of someone called M? In the Confederate command?”

Charlie’s face went carefully blank.

“I don’t know what you mean.”

“I think you do… and we need your help. Someone is planning something bad. Something that could hurt a lot of people. We’re trying to stop it, but we need information.”

“And why should I help Yankees?”

“Because we’re not Yankees. We’re not from either side.” Flynn hesitated, then made a decision. “We’re from the future. 2025. We got sent back in time by accident, and now we’re stuck here, trying to fix things and get home.”

Charlie stared at him for a long moment. Then, surprisingly, he laughed.

“I know.”

“You… what?”

“I know you’re from the future. M told us.” Charlie’s eyes narrowed. “M said strangers would come, dressed strangely, speaking strangely, carrying strange devices. Said they’d try to interfere with the plan. Said we should report any sightings immediately.”

Flynn’s heart was pounding. “Who is M, Charlie? Where can we find them?”

“I can’t tell you that.”

“Please—”

“I can’t tell you because I don’t know.” Charlie’s voice dropped. “Nobody sees M directly. Just messages, orders passed through couriers. But there’s someone who might know more.” He hesitated. “There’s a woman. Confederate sympathizer. She lives on a farm about two miles south, near the Round Tops. She handles communications for local operations.”

“Her name?”

“Mrs. Thornton.”

Clara, who had been listening silently, suddenly grabbed her brother’s arm. “Jude. The paradox. In Papa’s notes.”

Jude’s eyes went wide. “The Thornton Paradox. Papa named it after—”

“After someone who studied time travel.” Clara turned to Charlie. “This Mrs. Thornton. Does she have a first name?”

Charlie nodded slowly. “Margaret. Margaret Thornton.”

Clara, Flynn, and Jude looked at each other.

“M isn’t just a letter,” Clara breathed. “It’s her initial. Margaret Thornton. M. She’s M.”

Chapter Five: Pickett’s Charge

Tue, 27 Jan 2026 19:30:26 +0000

July 3rd dawned hot and still. Clara woke to the Union Army stirring—the “decisive day” had arrived. Jude and Flynn were already hunched over their grandfather’s notes.

“The note from ‘M,'” Jude said without preamble. “The handwriting is familiar. I’ve seen it before.”

“Later,” Clara urged. “We have to find the machine parts before the fighting moves south to Cemetery Ridge. It’s a risk we have to take.”

A single cannon boomed, then another. The bombardment had begun.

General Chamberlain arrived an hour later, face drawn. “My regiment is moving to the center,” he said. He had arranged for Mrs. Weikert, a local who knew the terrain, to guide them to the crash site. “Godspeed,” he told them. “I’ll find you when this is over—if I can.”

Clara watched him walk toward the guns. In her history, he became a hero and a governor. Here, he was just a man walking into a storm of lead.

The walk to the woods took an hour under a sky thundering with the “biggest bombardment of the war.” Amidst the underbrush, they found the debris. After twenty minutes of searching, Flynn emerged from a thicket holding a battered copper cylinder.

“The temporal stabilizer!” Jude grabbed it. “Without this, any window we open would collapse.”

They salvaged what they could—gears, wires, and crystals—though the field generator was still missing. “I can work with this,” Jude said, cautiously optimistic. “I need a day to assess it.”

Suddenly, a primal roar rose from the south.

“Pickett’s Charge,” Mrs. Weikert whispered. “The infantry assault has begun.”

From the tree line, the fields were a nightmare. Clara had read the statistics, but the reality was soul-crushing: neat gray lines of men shattering under artillery, smoke choking the air, and the terrible screams of twelve thousand soldiers marching into a “High Water Mark” that looked more like a mass grave.

By evening, the guns fell silent. The siblings huddled in the hayloft above a barn-turned-hospital. Chamberlain appeared at the top of the ladder, looking like a ghost, his uniform blackened by powder.

“It’s over,” he rasped. “Lee is broken. But I lost thirty-three men today.”

After a heavy silence, Jude asked to see the General’s diary. He compared it to the assassination warning.

“Look at the capital T,” Jude pointed out. “Your hand has a small hook at the top. The letter doesn’t. And the pressure is lighter. It’s a forgery.”

“But why forge a warning about an assassination that hasn’t happened?” Clara asked.

“To distract us,” Jude realized. “We’ve been so focused on Lincoln that we haven’t asked how the Confederates knew we were here, or who ‘M’ is. Someone wanted us looking the wrong way.”

Chamberlain’s eyes grew grave. “I’ll have my scouts look for agents. You finish that machine. But be careful—whoever did this is watching you.”

As the General left, the siblings settled into the hay. Outside, the farm was finally quiet, but Clara stayed awake, staring at the rafters.

Whoever you are, she thought, we’re going to find you.

Chapter Four: Reunions and Revelations

Tue, 20 Jan 2026 22:20:25 +0000

Jude was jolted awake by the barn door banging open, harsh sunlight flooding in and making him shield his eyes. A Union sergeant stood in the doorway, rifle at the ready, his face set in hard lines.

“On your feet, Rebs! Roll call!”

Tucker caught his eye as they shuffled into line. A tiny nod, barely perceptible. The message was away.

The sergeant walked down the line and stopped as he reached Jude.

“Well, well. The little spy is awake.”

“I’m not a spy,” Jude said automatically.

“Shut up.” The sergeant’s eyes swept over him, “You were found in Confederate territory, dressed like nothing anyone’s ever seen, with papers in your pocket we can’t make heads or tails of. If you’re not a spy, what are you?”

A time traveler would probably not go over well.

“I’m just a kid,” Jude said. “I got lost. My brother and sister—”

“Save it for the interrogation.” The sergeant jerked his head at two guards. “Take this one to Lieutenant Harris. Colonel wants answers before we move these prisoners north.” They dragged him out of the barn and across a muddy yard to a tent where a thin-faced officer sat behind a camp desk, papers spread before him.

“Sit,” Lieutenant Harris barked as he finished whatever he was reading, then turned those cold eyes on Jude. “Your name?”

“Jude Martin.”

“Where are you from, Jude Martin?”

“Pennsylvania.”

“Which part of Pennsylvania?”

Jude hesitated. Their home was near Harrisburg, but he didn’t know if saying that would help or hurt. “Near… near Philadelphia.”

“You don’t sound sure.”

“I got hit on the head. Things are fuzzy.”

Harris’s expression didn’t change. “The papers we found in your pocket. What are they?”

“Notes. For school. Science class.”

“Science class.” Harris repeated the words like they tasted bad. “These notes contain diagrams and equations we’ve never seen. Cesium oscillator and ‘temporal displacement theory.’ Care to explain ?”

Jude’s heart was hammering. “I don’t—I can’t—”

“You’re going to tell me the truth, boy. I don’t have time for games. You can cooperate now, or I can make things… uncomfortable. Your choice.”

The tent flap rustled, and a new voice cut through the tension:

“Lieutenant Harris. A word?”

Jude turned. A tall man stood in the entrance, dressed in the simple uniform of a Union colonel, his beard full and dark, his eyes kind despite the exhaustion around them. Harris jumped to his feet.

“Colonel Chamberlain! Sir, I wasn’t expecting—”

“Clearly.” Chamberlain stepped into the tent, his gaze moving from Harris to Jude and back again. “I’ve been looking for this prisoner. He’s needed for questioning at the Weikert farm.”

Harris’s face went red. “With respect, sir—”

“My orders come from General Meade himself.” Chamberlain cut him off. “The prisoner will accompany me. You can file a complaint if you like, but I suspect the general has more pressing concerns at the moment.”

Harris looked like he wanted to argue, but something in Chamberlain’s expression stopped him. “Yes, sir. Of course, sir.”

“Good.” Chamberlain gestured to Jude. “Come with me, Mr. Martin. Your brother and sister are waiting.”

Jude was shaking as they walked away from Harris’s tent, past rows of Union soldiers preparing for another day of battle, toward a horse tied to a nearby post.

“How did you find me?” he managed. “Flynn—Clara—are they—”

“They’re safe at the Weikert farm.” Chamberlain helped him mount behind the saddle. “A young Confederate drummer arrived this morning with your message. Brave boy—made it through five miles of enemy territory in the dark.” He swung up in front of Jude. “Your sister figured out the beacon from your grandfather’s notes. They’ve been trying to activate it all morning.”

“The oscillator—”

“Is damaged, I’m told, but possibly repairable.” Chamberlain kicked the horse into a trot. “We have bigger concerns, though. The letter your sister carried—the one warning of the assassination plot—there have been developments.”

“What kind of developments?”

Chamberlain was quiet for a moment, the only sounds the clop of hooves and the distant rumble of cannon fire.

“The battle continues,” he said finally. “Tomorrow will be the worst of it—a massive assault on our center that we’re calling the great cannonade. Thousands will die. And somewhere in the chaos, someone is planning something that will change the course of history.”

“The assassination.”

“Yes. But not just that.” Chamberlain turned his head slightly, his voice dropping. “Last night, one of my scouts intercepted a Confederate courier. He was carrying orders—orders that reference you by name, Jude. You and your siblings.”

The world seemed to tilt. “That’s impossible. We’ve only been here a day.”

“And yet there it is.” Chamberlain’s jaw tightened. “Someone on the Confederate side knows who you are. Knows about the time machine. Knows about the letter.” He paused. “They’re looking for you. And I don’t think they intend to let you go home.”

The horse carried them on, toward the farm, toward Flynn and Clara, toward a mystery that was growing deeper and more dangerous by the hour.

And somewhere in the distance, cannon fire thundered

Clara saw them coming from half a mile away.

She’d been standing at the edge of the Weikert property, her eyes fixed on the road that wound down from the ridge. Every few minutes, another wagon would appear—more wounded, more supplies, more soldiers heading toward or away from the front—and each time, her heart would leap and then sink.

But this time was different. This time, she recognized the figure on the horse, the smaller shape behind him, and she was running before she even knew she’d started.

“JUDE!”

Her brother looked terrible—pale and dirty, with a bruise darkening one side of his face—but he was alive. He was alive, and when Chamberlain reined the horse to a stop, Jude stumbled off and gave Clara a hug. Flynn arrived a moment later. “So glad to find you guys.”, he said.

“Not to ruin the moment,” Flynn said, “but we’ve got problems. Big ones.”

“I know.” Jude pulled back, fishing in his pocket for Papa’s backup notebook. “Chamberlain told me. Someone knows about us. The Confederates—”

“It’s not just the Confederates.” Flynn glanced around, lowering his voice. “Come on. We need to talk. Somewhere private.”

The hayloft of the Weikert barn was the closest thing to private they could find. Below, wounded soldiers groaned and surgeons worked their grim trade, but up here, among the dusty bales, the three siblings could finally speak freely.

“Show him,” Flynn said.

Clara pulled out the letter—the mysterious letter that had appeared in her pocket, the one warning of an assassination that shouldn’t exist. Jude read it twice, his face growing more troubled with each pass.

“This is Chamberlain’s handwriting?”

“He confirmed it himself.”

“But dated three days from now.”

“Yeah.” Flynn pulled out Papa’s damaged journal. “I found something in here. Something about causal loops. Papa wrote about something called the Thornton Paradox—”

“I know about it.” Jude’s eyes had gone distant, his mind clearly racing. “Papa mentioned it when we were building the machine. He said it was the most dangerous thing about time travel. If you create a loop—an event that causes itself—it becomes fixed. You can’t undo it without destroying the timeline.”

“So the letter—”

“Is either part of a loop, or it’s a fake designed to make us think it’s part of a loop.” Jude looked at his siblings. “Either way, someone wants us to believe that Lincoln is going to be assassinated at Gettysburg. The question is why.”

“Maybe because he actually is going to be assassinated?” Flynn said.

“But he wasn’t. In our history, Lincoln wasn’t killed until 1865, at Ford’s Theatre. John Wilkes Booth shot him. That’s what happened.”

“But we’re here now.” Clara spoke slowly, working through the logic. “We came back in time. We changed things just by being here. What if… what if our presence changes something that leads to an earlier assassination attempt?”

The three of them sat in silence, the weight of that possibility pressing down on them.

“Okay,” Jude said finally. “We need to think about this systematically. First question: What do we actually know?”

Flynn counted on his fingers. “One, we’re stuck in 1863. Two, the time machine is destroyed—mostly, anyway. I have the caesium oscillator. Three, Clara has a letter warning about an assassination on July 4th, supposedly written by Chamberlain. Four, someone on the Confederate side knows who we are and is looking for us.”

“Five,” Clara added, “the letter appeared in my pocket when I woke up. I didn’t write it. Neither did you guys. So where did it come from?”

“Could Papa have sent it somehow?” Jude asked.

“Maybe. But why warn about an assassination that didn’t happen? And why use Chamberlain’s handwriting?”

Jude was quiet for a moment. Then: “Unless it did happen. In some version of events.”

Flynn’s eyes widened. “Time branches. Papa talked about that too. The idea that every choice creates a new timeline.”

“What if,” Jude said slowly, “in some alternate version of history, Lincoln was assassinated at Gettysburg? And someone from that timeline—maybe Papa, maybe someone else—sent this letter back to prevent it?”

“But that would mean…”

“It would mean the assassination is real. It’s supposed to happen. And if we don’t stop it, history changes permanently.”

The sound of cannon fire rolled across the fields, closer than before. Below, someone screamed.

“Okay,” Clara said, forcing her voice steady. “Okay. So we have two jobs. First, fix the time machine so we can get home. Second, stop an assassination that might or might not be real.” She paused. “And we have three days to do both.”

“Two and a half,” Flynn corrected. “July 4th is the day after tomorrow.”

“Then we better get started.”

They spread Papa’s notes across the hayloft floor—the damaged journal, Jude’s backup notebook, every scrap of paper they could salvage from their pockets. Clara, who had always been the best at organizing, divided them into piles: time machine mechanics, temporal theory, and everything else.

“The core problem,” Jude said, studying a half-burned diagram, “is the caesium oscillator. It’s the heart of the machine—creates the frequency that opens the temporal window. Flynn, you said you have it?”

Flynn pulled the brass housing from his pocket. It was dented but intact, a small glass chamber visible through a crack in the casing. Inside, something shimmered faintly.

“It’s damaged,” Flynn said. “I don’t know how bad.”

Jude took it carefully, turning it in his hands. “The housing is cracked, but the oscillator itself might still work. If we can find the right materials—copper wire, a power source, something to amplify the signal…”

“There’s a blacksmith in town,” Clara offered. “I heard Mrs. Weikert mention him. He might have copper.”

“And there are telegraph batteries at the field hospital,” Flynn added. “I saw them earlier.”

“That could work.” Jude set the oscillator down gently. “But we need more than that. The machine didn’t just break—it scattered. There should be other components nearby. The temporal stabilizer, the field generator…”

“I only found a few pieces,” Flynn said. “Everything else is probably still in the woods. Or destroyed.”

“Then we search.” Clara’s voice was firm. “Tomorrow, after the battle moves. We go back to where you woke up, Flynn, and we find everything we can.”

“And the assassination?” Jude asked.

“We work on both.” Clara met her brothers’ eyes. “That’s what Papa would do. Multiple problems, multiple solutions. We don’t give up on either one.”

A ladder creaked below them, and all three fell silent. A moment later, General Chamberlain’s head appeared through the hayloft opening.

“There you are.” He pulled himself up, wincing slightly, and sat on a bale of hay. “Making progress?”

“Some,” Jude said cautiously. “We might be able to repair the time machine. But we need materials.”

“I suspected as much.” Chamberlain reached into his coat and pulled out a folded paper. “This arrived an hour ago. Intercepted from a Confederate courier.”

He handed it to Jude. The message was brief, written in a sharp, angular hand:

The temporal anomalies have been located. Proceed with Phase Two. The visitors must not be allowed to interfere with the July 4th operation. Failure is not acceptable.

—M

“Who’s M?” Flynn asked.

“That’s what I’d like to know.” Chamberlain’s face was grim. “Someone in the Confederate command structure is aware of your presence. Aware of time travel. And they’re planning something for Independence Day that they don’t want you to stop.”

“The assassination,” Clara said.

“Presumably. Though the letter refers to it as an ‘operation,’ not a killing. Which suggests something more complex than a simple shooting.”

Jude was staring at the message, his brow furrowed. “Temporal anomalies. That’s… that’s a scientific term. Whoever wrote this understands what we are.”

“A Confederate scientist?”

“Or someone from our time.” Jude looked up at his siblings. “What if we’re not the only travelers? What if someone else came back too—someone on the other side?”

The thought hung in the air, terrifying in its implications.

“Tomorrow,” Chamberlain said finally, “the battle resumes. General Lee will throw everything he has at our center, and we will hold. After that, you’ll have perhaps two days before Lincoln arrives. Two days to repair your machine, uncover the plot, and save a president.”

He stood, his injured foot making him wobble slightly. “I’ll do what I can to help—supplies, protection, intelligence. But I’m a soldier, fighting a war. My attention will be divided.”

“We understand,” Clara said.

“I hope you do.” Chamberlain looked at each of them in turn. “Because the fate of the nation—perhaps of history itself—may rest on what happens in the next forty-eight hours.”

He climbed down the ladder, leaving the three siblings alone with their notes, their damaged technology, and a mystery that seemed to grow darker by the hour.

Outside, the sun was setting over the Pennsylvania hills, painting the sky in shades of red and gold. Tomorrow, those hills would run with blood. And somewhere in the chaos, a conspiracy was unfolding that could change the world.

“So,” Flynn said quietly. “What do we do?”

Clara reached out and took her brothers’ hands. “We figure it out. Together. That’s what Martins do.”

Jude nodded. “For Papa. For home.”

“For history,” Flynn added.

They sat there as darkness fell, three children from the future, trying to save a past they barely understood.

And in the distance, the guns fell silent at last.

Chapter Three: The Confederate Camp

Sat, 17 Jan 2026 00:07:23 +0000

Jude Martin woke in darkness, and for a moment he thought he was dead.

Then the pain hit—a throbbing ache in his skull, a burning sensation across his ribs, the sharp protest of muscles that had been pushed far beyond their limits—and he decided that death probably wouldn’t hurt this much.

He was lying on something scratchy. Straw, his brain supplied after a moment. He was lying on straw, in near-total darkness, and somewhere close by, someone was groaning.

Jude tried to sit up. The world spun. He lay back down.

Okay, he thought. One thing at a time. Where am I?

He could hear voices outside—low, murmured conversations in accents he didn’t quite recognize. Southern, maybe? And underneath the voices, other sounds: the creak of wagon wheels, the stamp of horses, the distant pop of what he was pretty sure was gunfire.

Memories came back in fragments. Papa’s workshop. The time machine humming to life. Clara’s face, lit up with excitement. Flynn’s voice saying something Jude couldn’t quite remember. And then—

Nothing. Just blackness, and the smell of smoke, and a sensation like falling through infinite space.

“You awake over there, son?”

Jude’s whole body tensed. The voice came from somewhere to his left, rough and tired but not unkind.

“Who’s there?”

A chuckle. “Could ask you the same question. But I’ll go first. Name’s Private William Tucker, 15th Alabama Infantry. Currently a prisoner of the United States Army, same as you—except I know how I got here, and I got a suspicion you don’t.”

Jude’s eyes were adjusting to the darkness now. He could make out shapes: the walls of a barn, the slats of light coming through gaps in the wooden boards, the form of a man sitting against the opposite wall with his legs stretched out in front of him.

“I’m not a prisoner,” Jude said automatically.

“That so?” Tucker sounded amused. “Then why are you locked in a barn surrounded by Union guards?”

Fair point.

Jude pushed himself up again, slower this time, fighting through the dizziness. “Where are we?”

“Few miles east of Gettysburg, best I can tell. Yanks picked us up after yesterday’s fighting—me and about thirty others.” Tucker paused. “And you. Though damned if anyone knows where you came from.”

“I don’t understand. I’m not a soldier. I’m fourteen.”

“Didn’t say you were a soldier, son. Said you were a prisoner. Two different things.” Tucker shifted, and Jude heard him wince. “Yanks found you unconscious near the creek, dressed in clothes nobody’s ever seen before. They figured you were a Reb spy—young ones make the best scouts, they say. Brought you here with the rest of us.”

Jude’s head was pounding, but pieces were starting to fall into place. The time machine had malfunctioned. He’d been thrown into the past—Civil War, obviously, probably Gettysburg based on what Tucker had said. But he’d landed behind Confederate lines, and now the Union thought he was a spy.

Which meant Clara and Flynn were somewhere else. Maybe somewhere close, maybe not. And he had no way to find them.

“I’m not a spy,” Jude said.

“Figured as much. No offense, but you don’t exactly look the type.”

“What do I look like?”

Tucker was quiet for a moment. “Lost,” he said finally. “Scared. Looking for someone.”

Jude felt tears prick at his eyes and blinked them back furiously. “My brother and sister. We got separated.”

“Ah.” Tucker’s voice softened. “That’s hard. This war’s separated a lot of families. I’ve got two boys back home—seven and nine. Haven’t seen them in eight months.”

“I’m sorry.”

“Me too.” A long pause. “What’s your name, son?”

“Jude. Jude Martin.”

“Well, Jude Martin, here’s the situation as I see it. We’re locked in this barn until the Yanks figure out what to do with us. Tomorrow, maybe the day after, they’ll probably march us to some prison camp up north. Your brother and sister—if they’re out there, and if they’re looking for you—they’d have to find you before then.”

“That’s not a lot of time.”

“No. It’s not.”

Jude pulled his knees up to his chest, wrapping his arms around them. His jacket pocket crinkled, and he remembered—Papa’s backup notes. A small notebook, thin enough to fit in a pocket, containing simplified versions of the equations and schematics needed to operate the time machine. Papa had insisted they each carry one, “just in case.”

Just in case of exactly this, apparently.

Jude pulled out the notebook. Even in the dim light, he could make out Papa’s handwriting, cramped but legible. Most of it didn’t make sense to him—he was smart, but he wasn’t a genius… temporal mechanics wasn’t exactly covered in ninth-grade science—but there was one section he remembered Papa explaining:

EMERGENCY BEACON: The caesium oscillator contains a low-power transmitter that can be activated manually. If separated from the main device, the beacon will emit a signal on a frequency of 9.192631770 GHz—the hyperfine transition frequency of caesium-133. Any functioning chronometer tuned to this frequency can detect the signal within a five-mile radius.

Jude’s heart leaped. Flynn had the caesium oscillator—Jude remembered seeing him tuck it into his pocket back in Papa’s workshop. If Flynn still had it, and if he could figure out how to activate the beacon…

“Tucker,” Jude said suddenly. “I need to get a message out. To my brother.”

“Son, we’re locked in a barn. Not exactly a post office.”

“I know. But if there was a way—any way—to communicate with someone outside…”

Tucker was silent for a long moment. Then: “There’s a boy. Confederate drummer, captured same time as me. Name’s Charlie. He’s small enough to fit through the gap in the boards at the back—been sneaking out at night to scout the guards. Yanks haven’t caught on yet.”

“Can he carry a message?”

“Depends on where the message needs to go.”

Jude’s mind raced. He didn’t know exactly where Flynn and Clara were, but the Weikert farm had been mentioned in their history lessons—a field hospital during the battle. If Flynn had found the wreckage of the time machine, if he’d met anyone who could help…

“The Weikert farm,” Jude said. “Can Charlie get there?”

Tucker let out a low whistle. “That’s a ways. And it’s behind Union lines the whole way.”

“But is it possible?”

Another long pause. Then: “Charlie’s a clever kid. If anyone could do it, he could.”

“Then please.” Jude hated how desperate he sounded, but he couldn’t help it. “Please help me. My brother and sister are my only way home.”

Tucker was quiet for so long that Jude thought he’d fallen asleep. Then: “I’ve got kids of my own. If they were lost, if someone could help them…” He sighed. “Alright, Jude Martin. Write your message. I’ll make sure Charlie gets it.”

Jude tore a blank page from Papa’s notebook and pulled a stub of pencil from his pocket. His hands were shaking, but he forced them steady as he wrote:

Flynn and Clara—

I’m alive. Being held prisoner in a barn somewhere east of Gettysburg. Union thinks I’m a Confederate spy. They’re moving us soon—tomorrow or the day after.

If you still have the caesium oscillator, activate the emergency beacon. I have Papa’s backup notes. Together we can fix this.

Find me. Please.

—Jude

He folded the message and handed it to Tucker, who tucked it into his shirt.

“I’ll give it to Charlie in the morning,” Tucker said. “When the guards do their rounds, he slips out. He’ll have it to your family by sundown tomorrow, Lord willing.”

“Thank you,” Jude whispered. “Thank you so much.”

“Don’t thank me yet, son. Long way between here and that farm.” Tucker shifted, getting comfortable. “Get some sleep if you can. Tomorrow’s going to be a long day.”

Jude lay back on the straw, staring up at the darkness. Outside, the night sounds continued: voices, horses, the occasional crack of distant gunfire. Somewhere out there, the Battle of Gettysburg was still being fought. And somewhere out there—he had to believe it—Flynn and Clara were looking for him.

He just had to hold on until they found him.

Chapter Two: The Girl in the Barn

Thu, 15 Jan 2026 21:32:29 +0000

Clara Martin had always been the practical one.

When Jude got lost in his books and Flynn got lost in his video games, Clara was the one who remembered to feed the dog, who set reminders for homework assignments, who made sure everyone had their lunch boxes before the bus came. Being the middle child didn’t mean being the least responsible—at least not in the Martin family.

But nothing in twelve years of practical experience had prepared her for waking up in the middle of the nineteenth century.

She’d been alone when she came to, lying in a field of tall grass with the sun beating down on her face and the sound of distant explosions rattling her teeth. It had taken her twenty minutes to find the road, another hour to find the farm, and every second of that time she’d spent fighting down the panic that threatened to swallow her whole.

Flynn and Jude are out there somewhere, she’d told herself over and over. You’ll find them. You just have to stay calm.

Easier said than done when cannons were firing in the distance and soldiers in blue were streaming past in organized chaos, some of them staring at her jeans and sneakers like she’d dropped down from the moon.

Now she sat on an overturned crate in the Weikert barn, wrapping bandages around the arm of a young Union private who couldn’t have been more than seventeen. His name was James, and he kept apologizing for the blood he was getting on her hands.

“It’s fine,” Clara said for the fourth time. “Really. It doesn’t bother me.”

This was a lie. It bothered her a lot. But what was she supposed to do—refuse to help?

“Where’d you say you were from again?” James asked, wincing as she tied off the bandage.

“Pennsylvania.” At least that part was true. “Near… Harrisburg.”

“City girl, huh?” James tried to smile, but it came out more like a grimace. “Never been there myself. Always wanted to, though. Hear they’ve got theaters and everything.”

Clara was trying to formulate a response when the barn door swung open and a figure rushed in, silhouetted against the bright afternoon sun.

“Clara!”

She knew that voice. She’d know it anywhere.

“Flynn!” She was off the crate and running before she could think, throwing her arms around her brother so hard she nearly knocked him over. “Oh my Goodness, Flynn, I thought—I didn’t know if—”

“I’m okay.” Flynn hugged her back just as fiercely. “I’m okay. Are you hurt? What happened? Where’s Jude?”

Clara pulled back, shaking her head. “I don’t know. I woke up alone in a field. I haven’t seen him. I haven’t seen anyone except—” She stopped. “Wait. Have you seen Jude?”

“No.” Flynn’s face was pale under the dirt and scratches. “I woke up near the battle. Found what’s left of the time machine. It’s destroyed, Clara. Completely destroyed.”

The practical part of Clara’s brain filed that information away for later panic. Right now, they had more immediate problems.

“Mrs. Weikert told me something weird,” Flynn continued, lowering his voice even though James and the other wounded soldiers were too far away to hear. “About a letter. She said you had a letter?”

Clara had almost forgotten about the letter.

She reached into the pocket of her jacket—her favorite denim jacket, now covered in grass stains and splashes of blood that weren’t hers—and pulled out the folded document. The paper was old, brownish at the edges, and part of one corner had been burned away. But the writing was still legible: elegant, looping script that Clara couldn’t read no matter how hard she squinted.

“I found it in my pocket when I woke up,” she said. “I don’t know where it came from. I don’t remember picking it up.”

Flynn took the letter, unfolding it carefully. His eyes scanned the text, and Clara watched his face go from confused to shocked to something close to afraid.

“This is dated July 4th, 1863,” he said slowly. “Three days from now.”

“How is that possible? We just got here.”

“I don’t know. But Clara—” Flynn looked up at her. “This letter is warning President Lincoln about an assassination attempt. Here, at Gettysburg. On Independence Day.”

Clara’s stomach dropped. “But Lincoln wasn’t assassinated at Gettysburg. Everyone knows that. He was killed at Ford’s Theatre in 1865.”

“Exactly.” Flynn folded the letter and handed it back to her. “So either this letter is a fake, or…”

“Or something changed,” Clara finished. “Something changed the timeline.”

They stared at each other, the weight of that possibility hanging between them.

“We need to find Jude,” Flynn said finally. “And we need to figure out where this letter came from. But first, we need to—”

“Children.”

They both jumped. Mrs. Weikert stood in the barn doorway, her face grim. Beside her was a man Clara hadn’t seen before: tall, broad-shouldered, wearing a Union officer’s uniform with a general’s stars on his shoulders. His hair was dark, his beard neatly trimmed, and his eyes held an intelligence that made Clara want to stand up straighter.

“Allow me to introduce General Joshua Lawrence Chamberlain,” Mrs. Weikert said. “He commands the 20th Maine. And he would very much like to speak with you about that letter.”

General Chamberlain led them away from the barn, to a small tent pitched at the edge of the Weikert property. Inside, a camp table held maps and papers, a lantern providing light even though the sun was still up.

“Please, sit.” Chamberlain gestured to two folding stools. “I apologize for the accommodations. It’s been a… challenging few days.”

Clara had read about Chamberlain in school. The hero of Little Round Top, whose bayonet charge had saved the Union left flank on the second day of Gettysburg. Looking at him now—tired, dusty, with a bandage wrapped around his left foot—it was hard to reconcile the legend with the man.

“I’m going to be direct with you,” Chamberlain said, settling into his own chair with a wince. “You’re clearly not from around here. Your clothes, your manner of speech, the technology Corporal Whitfield reported seeing in the woods—none of it belongs in 1863. So I’m going to ask you once, and I expect an honest answer: Where are you from?”

Flynn and Clara exchanged a glance.

“The future,” Flynn said. “2025. We’re from 2025.”

Chamberlain’s expression didn’t change. “I see. And how did you come to be here, in the middle of the Battle of Gettysburg?”

“Our grandfather built a time machine,” Clara said. “We were helping him test it. Something went wrong. We woke up here.”

“Separately,” Flynn added. “Our brother Jude is still missing.”

“The time machine,” Chamberlain said slowly. “I assume that’s what Whitfield found mangled in the woods?”

Flynn nodded. “Most of it. I have some of the pieces, but… it’s not enough to get us home.”

Chamberlain was silent for a long moment, his fingers steepled beneath his chin. Clara wondered what he was thinking. Was he going to call them liars? Have them arrested as spies?

“I fought at Antietam,” Chamberlain said finally. “Before that, I was a professor of rhetoric at Bowdoin College. I’ve read Homer, Virgil, Dante. I’ve studied the great mysteries of history and philosophy. I like to think I have an open mind.” He leaned forward. “So when Mrs. Weikert tells me that two children appeared out of nowhere, dressed in impossible clothes, carrying a letter that warns of an assassination that hasn’t happened… I’m inclined to listen.”

“You believe us?” Clara couldn’t hide her surprise.

“I believe something extraordinary is happening. Whether your explanation is the correct one…” Chamberlain shrugged. “That remains to be seen. But the letter is real. I’ve examined it myself. The paper is old—older than you are, certainly. The handwriting matches that of someone I know. And the warning it contains is too specific to be dismissed.”

“Who?” Flynn leaned forward. “Whose handwriting is it?”

Chamberlain’s eyes met his. “Mine.”

The word hung in the air like a thunderclap.

“The letter is in my handwriting,” Chamberlain continued. “Dated three days from now. Warning President Lincoln of an assassination plot during his visit to commemorate our victory—a victory we haven’t yet achieved. But I didn’t write it. I haven’t written it. And yet, there it is.”

Clara’s mind was racing. “That means… in some version of events, you will write it. Something’s going to happen in the next three days that makes you write that letter.”

“So it would appear.”

“But we don’t know what,” Flynn said. “We don’t know who’s planning the assassination, or how they’re going to do it, or why.”

“No,” Chamberlain agreed. “We don’t. But I intend to find out.” He stood, wincing again as weight settled on his injured foot. “Tomorrow, the battle will resume. Lee’s forces will attack our center, at Cemetery Ridge. It will be a slaughter—for them, not for us. By this time the day after tomorrow, the Confederate army will be in retreat, and the tide of this war will have turned.”

“Pickett’s Charge,” Flynn breathed. “We learned about it in school.”

“I don’t know what history calls it in your time, but yes—a massed infantry assault across open ground against fortified positions. Thousands will die.” Chamberlain’s voice was heavy. “And three days after that, President Lincoln will come to honor the dead. And if that letter is to be believed, someone will try to kill him.”

“We have to stop it,” Clara said.

“Yes. We do.” Chamberlain looked at each of them in turn. “But first, we need to understand how this letter came to exist. And that means finding out what happens between now and July 4th that causes me to write it.” He paused. “Or perhaps… that causes someone to forge it in my hand.”

“You think it might be a forgery?” Flynn asked.

“I think nothing is certain. I think you two have arrived here with knowledge of events that haven’t happened yet, carrying a letter that shouldn’t exist, missing a brother who could be anywhere in this chaos.” Chamberlain picked up his hat from the table. “I think we’re dealing with forces beyond my understanding. And I think our only hope of unraveling this mystery is to work together.”

He walked to the tent flap, then paused. “Get some rest tonight. Tomorrow, the battle continues. But when it’s over, I’ll need your help—your knowledge of the future, your connection to this letter. Whatever’s happening here, you two are at the center of it.”

“Wait,” Clara called. “What about our brother? Jude is still out there somewhere.”

Chamberlain’s face softened. “I’ll put the word out to my men. A fourteen-year-old boy in strange clothes shouldn’t be hard to spot. If he’s within our lines, we’ll find him.”

“And if he’s not?” Flynn’s voice was tight.

Chamberlain didn’t answer. He just put on his hat and walked out into the fading afternoon light.

Clara and Flynn sat in silence for a long moment after he left.

“What are we going to do?” Clara finally asked.

“I don’t know.” Flynn pulled Papa’s journal from his pocket, thumbing through the water-damaged pages. “I’ve been trying to read Papa’s notes, but half of them are ruined. The parts I can make out talk about temporal displacement theory, caesium oscillation frequencies, stuff I don’t understand.”

“Let me see.”

Clara took the journal and began scanning the pages, her practical mind searching for anything useful. Most of it was beyond her—equations and diagrams that meant nothing to an eleven-year-old, even a smart one. But then she found something, near the back of the book, written in Papa’s cramped handwriting:

WARNING: The Thornton Paradox must be considered. If any traveler creates a causal loop—an event that causes itself—the loop becomes a fixed point in time. It CANNOT be undone without destroying the timeline itself.

“Flynn.” Clara grabbed her brother’s arm. “Look at this.”

Flynn read the passage, his face growing paler with each word. “A causal loop. Something that causes itself.”

“Like a letter written to warn about an assassination that only happens because the letter exists,” Clara said slowly.

They looked at each other, understanding dawning.

“We didn’t just land in the middle of history,” Flynn said. “We landed in the middle of a time paradox.”

“And if we don’t solve it—”

“The whole timeline could unravel.”

Outside, thunder rumbled. But the sky, Clara knew, was perfectly clear.

The cannon fire was getting closer.

Chapter One: The Thunder That Wasn’t Thunder

Thu, 15 Jan 2026 21:15:41 +0000

Flynn Martin woke to the smell of smoke and the taste of dirt.

His cheek pressed against something cold and wet—leaves, he realized, as his eyes fluttered open. Dead leaves, brown and rotting, carpeting a forest floor he didn’t recognize. His head throbbed like someone had stuffed a bass drum inside his skull and was pounding out a rhythm only pain could hear.

Where am I?

He pushed himself up on shaking arms, and that’s when he heard it—a sound like thunder, but wrong somehow. Too sharp. Too close together. And underneath it, something worse: screaming.

Flynn scrambled backward, his sneakers slipping on the damp ground. Through the trees, maybe two hundred yards away, he could see smoke rising in thick gray columns. Figures moved through the haze—running, falling, some of them not getting back up.

That’s not thunder, his brain finally supplied, catching up to what his ears already knew. Those are gunshots.

Another boom, louder than the rest, shook the ground beneath him. Flynn threw himself behind a massive oak tree, pressing his back against the rough bark, breathing so hard he thought his lungs might burst.

Think, he commanded himself. Think, think, think.

The last thing he remembered was Papa’s workshop. The converted barn behind his grandfather’s farmhouse in rural Pennsylvania, cluttered with tools and wire and pieces of equipment Flynn couldn’t name. Clara had been there, holding a wrench, her dark braids swinging as she leaned over something mechanical. And Jude—where was Jude?

Flynn squeezed his eyes shut, trying to grab hold of the memory, but it slipped away like water through his fingers.

He risked a glance around the tree trunk. The battle—because that’s what it was, he understood now, an actual battle—seemed to be moving away from him, the sounds of combat drifting eastward. But the smoke still hung thick in the air, and somewhere in the distance, a horse screamed.

I need to move.

Flynn forced his legs to work, staying low as he crept through the underbrush in the opposite direction of the fighting. Branches scratched at his face and caught at his jacket—his favorite blue hoodie, now torn at the sleeve and covered in mud. He didn’t care. He just needed to get away, find somewhere safe, figure out what was happening.

That’s when he saw the wreckage.

It lay in a small clearing, scattered across the forest floor like the remains of some mechanical beast. Twisted copper pipes. Shattered glass that caught the weak sunlight filtering through the leaves. A control panel, cracked down the middle, still sparking weakly.

Flynn’s heart stopped.

He knew that control panel. He’d watched Papa build it over the past three months, carefully soldering each connection while explaining the theory behind temporal displacement in terms a twelve-year-old could almost understand.

“The key is the caesium oscillator,” Papa had said, his wild white hair sticking up at odd angles as it always did when he was excited. “It creates a frequency that, when properly amplified, can theoretically punch a hole in the fabric of spacetime itself.”

Flynn had nodded like he understood. He mostly didn’t. But he understood enough to know that what lay scattered before him now was the remains of Papa’s time machine.

And that meant—

“Clara,” Flynn whispered. Then louder: “CLARA! JUDE!”

No answer. Just the distant pop-pop-pop of gunfire and the rustle of wind through branches.

Flynn dropped to his knees beside the wreckage, searching frantically through the debris. Papa’s leather journal—ruined, the pages soaked with something that might have been rain or might have been worse. A pocket watch, its face shattered, hands frozen at 3:47. The brass housing of the caesium oscillator itself, dented but somehow still intact.

But no Clara. No Jude. No Papa.

They could be anywhere, Flynn realized, and the thought hit him like a physical blow. Anywhen*.*

A twig snapped behind him.

Flynn spun, grabbing the first thing his hand found—a length of copper pipe, bent but solid—and raised it like a weapon.

The man who emerged from the trees was tall and thin, dressed in a blue uniform coat that hung loose on his bony frame. His face was gaunt, shadowed by a beard that looked like it hadn’t seen a razor in weeks, and his eyes were the pale gray of old ice. A rifle was slung over his shoulder, and a red-stained bandage wrapped around his left hand.

“Easy there, son,” the man said, holding up his good hand, palm out. “I ain’t looking to harm you.”

Flynn didn’t lower the pipe. “Who are you?”

“Corporal Thomas Whitfield, 20th Maine Volunteer Infantry.” The man’s eyes swept over Flynn, taking in his strange clothes, his muddy sneakers, the copper pipe clutched in his white-knuckled grip. “Question is, who are you? And what in the name of the Almighty are you doing out here dressed like that?”

Flynn’s mind raced. 20th Maine. Civil War. But which battle? Which day?

“I’m…” He swallowed hard. “I’m lost. I was with my brother and sister, and there was an accident, and I don’t know where they are.”

It wasn’t even a lie.

Corporal Whitfield’s expression softened slightly. “Lot of that going around today. Civilians caught in the crossfire.” He glanced back toward the sounds of battle. “You best come with me. I’m heading to the field hospital at the Weikert farm. You can’t stay out here—Rebs could be anywhere.”

“Rebs?” The word slipped out before Flynn could stop it.

Whitfield stared at him like he’d grown a second head. “Confederates. Rebels. You hit your head or something, son?”

Flynn touched his throbbing temple. “Actually, I think I did.”

“That explains the confusion, then.” Whitfield stepped closer, close enough that Flynn could smell gunpowder and sweat and something darker, more metallic. “Come on. We’ll get you sorted at the farm. Maybe someone there has seen your brother and sister.”

Flynn hesitated, looking back at the wreckage of the time machine. He couldn’t just leave it here—it was their only way home. But he couldn’t carry it all, and he couldn’t stay here alone, and he needed to find Clara and Jude more than he needed anything else in the world.

He grabbed Papa’s journal—ruined or not, it might still help—and the brass housing of the caesium oscillator, stuffing both into his hoodie pocket. Then he turned back to Whitfield.

“Okay,” he said. “I’ll come with you.”

They walked in silence for a while, Whitfield setting a pace that Flynn struggled to match. The sounds of battle faded behind them, replaced by the ordinary noises of the forest: birdsong, insects, the whisper of wind through leaves. It almost felt peaceful, if Flynn could forget the smoke still staining the sky and the distant boom of cannon fire.

“That thing you were holding,” Whitfield said suddenly. “The machine. Never seen anything like it.”

Flynn’s hand went instinctively to his pocket, where the caesium oscillator made a heavy bulge. “It’s… complicated.”

“I expect it is.” Whitfield’s pale eyes studied him sidelong. “Your clothes, too. That material—never seen its like. Where’d you say you were from?”

“I didn’t.”

“No,” Whitfield agreed. “You didn’t.”

They emerged from the trees onto a rutted dirt road, and Flynn stopped dead.

The farmhouse sat on a small rise, a simple two-story structure with white clapboard siding and a wrap-around porch. But it was what surrounded the farmhouse that stole Flynn’s breath: dozens of wounded men, lying on blankets in the yard, their moans carrying on the summer air. Surgeons in blood-soaked aprons moved between them, while women in long dresses brought water and bandages.

“Welcome to hell,” Whitfield said quietly. “Or as close as mortal men can get.”

Flynn couldn’t speak. In school, they’d learned about the Civil War, about casualty figures and battle maps and the names of generals. But no textbook had prepared him for this—the reality of it, the smell of blood and suffering, the sound of a young man crying out for his mother.

“You alright, son?” Whitfield’s hand came down on his shoulder, steadying him. “You’ve gone pale.”

“I’m fine,” Flynn lied. “I just… I’ve never seen…”

“Pray you never do again.” Whitfield’s voice was soft, but there was steel underneath it. “Come on. Let’s find someone in charge.”

They made their way through the yard, stepping carefully between wounded soldiers. Flynn tried not to look, but he couldn’t help it—these were boys, some of them not much older than Jude, their blue uniforms torn and stained, their faces twisted with pain.

One of them grabbed Flynn’s ankle as he passed.

“Water,” the soldier croaked. His face was gray, his lips cracked and bleeding. “Please. Water.”

Flynn looked around frantically, spotted a bucket with a ladle sitting beside the porch, and ran to get it. He brought it back and knelt beside the soldier, carefully lifting the ladle to his lips.

“Thank you,” the soldier whispered after he’d drunk. “Thank you, thank you.”

“You’re welcome,” Flynn said, and his voice cracked on the words.

“That was kind of you.”

Flynn looked up. A woman stood over him, her dress covered by a bloody apron, her hair escaping from a bun at the back of her neck. Her face was tired but kind, and her eyes—dark brown, almost black—held a warmth that seemed impossible in the middle of so much suffering.

“I’m Mrs. Weikert,” she said. “This is my family’s farm. And you are?”

“Flynn. Flynn Martin.”

“Well, Flynn Martin.” She glanced at Corporal Whitfield, then back at Flynn. “You’re not dressed for this century, I notice.”

Flynn’s blood went cold.

Mrs. Weikert smiled, and there was something knowing in it, something that made the hair on the back of his neck stand up. “Don’t worry, child. Your secret’s safe with me. After all—” She leaned closer, lowering her voice to barely a whisper. “—you’re not the only strange traveler to appear here today.”

Flynn grabbed her arm, all pretense forgotten. “My brother and sister. A boy, fourteen, dark hair. And a girl around 12, with braids. Have you seen them? Are they here?”

Mrs. Weikert’s smile faded. “I’ve seen the girl. She arrived two hours ago, just as confused as you. But the boy…” She shook her head. “I’m sorry. There’s been no sign of him.”

“Where is she? Clara—where is she?”

“In the barn, helping with the less severely wounded. But Flynn—” Mrs. Weikert caught his wrist as he started to turn away. “There’s something you should know. Your sister didn’t arrive alone. She was found with something. A document, old and partially burned.”

“What kind of document?”

Mrs. Weikert’s eyes searched his face. “A letter,” she said slowly. “Addressed to President Lincoln. Dated three days from now. Warning him of an assassination plot

At Ford’s Theater? Flynn asked.

No, she said – here at Gettysburg, on July 4th, 1863.”

Flynn felt the world tilt beneath his feet.

“But that’s impossible,” he thought. “Lincoln wasn’t assassinated at Gettysburg. That never happened. And if the assassination never happened, then why does that letter exist? And who wrote it?”

Mrs. Weikert turned and walked away, leaving Flynn standing in the middle of a Civil War field hospital, clutching a piece of impossible technology in his pocket, with his sister waiting in a barn and his brother lost somewhere in time.

And a mystery that could change the course of American history itself.

To be continued…