Read Chapter 1: The First Hole

The chalk was wet tonight. Émile felt it through his gloves, that cold, sucking damp that meant they were getting close to the water table again. He knelt in the dark, head bowed under the low roof of the gallery, his pick swinging in a careful, measured arc. The tunnel they were driving was barely a metre high and just over a metre wide, a wormhole aimed at the German lines four hundred metres away.

Beside him, Félix worked with the flat-bladed shovel, scooping the spoil into sandbags. He moved with a rhythm Émile knew well, had known since they were boys in the same mining village in the Pas-de-Calais. Félix was shorter, broader, and he hummed as he worked—a tune Émile couldn't name and Félix never bothered to explain.

“Slower, Félix,” Émile said, his voice low even though the German geophones were a hundred metres off. “We’re close to something.”

“Close to a German bayonet, more like.”

“No. The chalk’s different.”

Émile stopped swinging and ran his fingers over the face of the cut. The pure white chalk they’d been cutting through had given way to something harder, more brittle, a grey stone streaked with veins of rust-red. He pressed his ear to the face. There was no sound but the distant thump of artillery far above, muted by twenty metres of earth.

“It’s not natural,” he muttered.

“All chalk’s natural, Émile,” Félix said. “It’s what the good Lord made Flanders out of, and then he had the Germans dig on top of it.”

“This isn’t chalk. And it’s not clay either.”

Émile took the pick again but changed his stroke—shorter, more chipping than swinging. The iron bit against the stone with a ring that felt wrong. He aimed for the seam, where the grey met the white. On the third strike, the pick sank deeper than it should have. The stone gave way in a slab, and suddenly the air moved.

It was not a breeze from the surface. It was a breath from below—cold, still air that smelled of dust and iron and something else, something ancient and dry, like old bones.

Émile pulled the slab away with his hands. Beyond it was a void.

Félix leaned over his shoulder. “Jesus,” he whispered.

“Don’t say that down here.”

They had broken into a tunnel. It was not a German gallery, not of the kind they were digging. It ran at right angles to their own, and it was larger—tall enough for a man to stand upright, with a vaulted ceiling that curved into the dark beyond the reach of their candle lantern. The walls were not raw chalk. They were cut stones, fitted together without mortar, each one the size of a coffin lid. And along the stones, faint in the poor light, were markings.

Émile crept forward, his heart pounding against his ribs. The air was still, but it did not feel empty. It felt like walking into a cathedral that had been buried and forgotten. His fingers brushed the wall. The carvings were not letters he knew. They spiraled and curled like the roots of a tree, or like waves frozen in the act of breaking.

“What is this place?” Félix said. He’d crawled up beside Émile, his shovel held like a weapon.

Before Émile could answer, he heard it—a groan from the ceiling above them. A hairline crack had opened in the vaulted roof, running from the breach they’d made toward the far dark. Émile saw it the way he saw bad ground in the mines, the way his father had taught him to see it.

“Move,” he said.

He shoved Félix hard, back toward the gallery. The stone fell where Félix had been standing a second before—a block the size of a man’s torso, then a cascade of smaller rubble and dust. The air filled with chalk grit.

Émile dove after Félix, landing on his friend’s back. The fall of stone continued for another five seconds, then stopped. Silence. Then a wheeze.

“Félix.”

“I’m here. I’m here.” Félix’s voice was high, strained. “My leg. The bastard thing’s got my leg.”

Émile scrambled around him, finding the lantern where it had fallen and shaking it back to a low flame. Félix was lying half in the breach, half in the old tunnel. The falling stone had collapsed behind him, sealing them inside the strange chamber. His leg—his right leg—was pinned under a slab of the carved stone.

Félix’s face was white, sweat beading on his brow despite the cold. “Get it off me.”

“I will.”

Émile wedged his pick under the slab and pushed with his legs. The slab shifted, slid, fell away. Félix’s trousers below the knee were dark with blood. Not a flood, but a steady soak. Émile tore open the wound with his knife. A flap of skin, a gash across the calf. Bone was not showing, but it would need proper tending.

“Can you move it?”

Félix flexed his foot, then hissed through his teeth. “I can. It hurts.” “It will hurt more later. We need to get you out.”

The exit was gone. The collapse had filled the breach with rubble, and beyond the rubble was the gallery, and beyond the gallery was the surface, eight levels up through clay and sandbag and timber. They had air in the old tunnel, at least, but no way out but digging.

Émile turned back to the facing wall. In the lantern light, he saw what he hadn’t noticed before in the rush. Among the spirals and curls, at the level of his chest, was a single word carved in neat, clean Roman letters that had no business being down here.

L U X E.

Luxury. Or light. The word sat alone in its own small panel, as if someone had signed a painting but painted nothing to go with it.

Félix had gone quiet. He was looking at the word too.

“What does that mean?” Félix said.

“Nothing. It means nothing. It’s nothing.”

Émile was already crawling toward the rubble. He began pulling stones away with his hands, setting them aside in the darkness. He worked for what felt like an hour, maybe more—his fingers numbing with the cold and the cut of sharp edges, his mind fixed on the single word he’d seen. LUXE. He couldn’t stop seeing it, burned behind his eyes.

He broke through to the gallery after what felt like a lifetime. The familiar smell of their own sweat and carbide came back to him, and he dragged himself through, then reached back for Félix.

Félix was pale, but he crawled the last metre on his own. “You owe me a drink that isn’t chlorinated water,” he said.

“I owe you a new leg,” Émile said. “Now don’t talk. Save your breath.”

The way back up the shaft was slow. The gallery climbed through a series of timber-built dugouts, past sleeping men who stirred and cursed, past the whispering bucket line, until they broke out into the night air above the support trench. The sky was low and red from the shellfire to the east. Émile handed Félix off to the stretcher bearers who appeared like ghosts out of the dark.

A light rain began to fall.

Ten minutes later, Émile stood in front of a sheet of canvas that served as the door of the officer’s dugout. Lieutenant Roussel was at his map table, marking lines with a pencil. He was a thin man with a perpetual frown and the tired eyes of someone who had been told the war would be over by Christmas for two Christmases in a row.

“You’re supposed to be digging, Sapeur Marchand.”

“We hit something, sir.”

Roussel’s pencil stopped moving. “We hit something. What do you mean, we hit something?”

“A tunnel, sir. Not one of theirs. Old. It had cut stone walls. Carvings. And a word.”

“Is that where Félix got hurt?”

“Yes, sir. A fall of stone.”

Roussel set down the pencil. He rubbed his temple. “How far from the line?”

“About six metres under their wire, sir. Maybe less. The tunnel runs perpendicular to our gallery.”

“And how wide?”

“Tall enough to stand in, sir. Run it both directions further than I could see.”

Roussel was quiet. Émile could smell the coffee on his breath, the rum on his collar. The lieutenant stared at the map in front of him, and for a moment there was something that might have been fear on his face, before the mask came back.

“You will seal that breach,” Roussel said.

“Sir?”

“You will seal it. Timber it, brace it, sandbag it. You will mark the location on the survey and you will not mention it to anyone else. That tunnel does not exist.”

“But sir, the carvings—there was something down there. It wasn’t German. It wasn’t anything we’ve made.”

“It was there before the war, Marchand. It will be there after the war. And our war is up there, not down there. If the Germans break into that tunnel before we do, they’ll use it to cross under our wire in an hour. If we use it, we might do the same to them. But neither of us gets any good out of it if it collapses on our working parties. You’ll seal it.”

“And if the Germans find it from their side?”

Roussel met his eyes. “Then they’ll have the same problem we do. Now get out of my sight. And take your friend to the medic. Tell them he got hit by a stray shell fragment.”

Émile held his ground a beat longer. He thought of the word on the wall. LUXE. He thought of the cold air moving in that dark place, the smell of something older than the war. But he was a sapper, and a sapper didn’t argue with an officer. He saluted and left.

Back in the billets that night—a dugout that smelled of damp cloth and cigarette smoke—Émile sat on a ration crate beside Félix’s cot. The medic had stitched the leg and given Félix a sip of rum. Félix was asleep within minutes, muttering something about his mother’s cabbage soup.

Émile stripped off his gloves and looked at his hands. The chalk dust was ground into every crease. But on the tips of his fingers, there was something else. A dark residue, almost metallic. Also, something he hadn’t noticed before: a faint, persistent sound, carried through the earth and up through the duckboards beneath his boots.

Tapping.

It came from the ground the gallery ran through. Not random. Not the vibration of shellfire. A rhythm—one, two, three, pause, one, two, three. Like a heartbeat. Or like someone knocking on a door.

He looked down at his own hands, at the rust-dark stains on his fingers, and realized the sound was coming from the direction of the tunnel he had been ordered to seal.

He didn’t seal it. He knew that already. He had marked the breach with a single turn of chalk on the gallery timber, a mark only he would recognize. He didn’t know why he had done it. He only knew that some doors, once opened, were harder to close than others.