Read Chapter 17: The Dead Conductor

The maintenance bay door groaned open on the third kick from Mercer’s boot heel, and the stench of diesel and hot metal rolled over them. He pressed a hand to his side, felt the slick warmth of blood already soaking through the field dressing Camille had slapped on back in the junction. She moved past him, Glock raised, sweeping the short vestibule between the maintenance bay and the rear of the train.

"Clear," she said, voice low. "But I don’t like how quiet it is."

The train had stopped shuddering under them. They’d felt the lurch through the tunnel concrete a quarter mile back—the whole consist grinding to a halt somewhere past the reroute point, deep in the unlit service gallery. No emergency lights in here. Just the faint blue spill from the train’s undercarriage access panels.

Mercer followed, breaths short. Each step cost him. The bullet had gone through clean, but clean didn’t mean kind.

They reached the coupling between the last passenger car and the service car ahead of it. The door was ajar. Through the gap, a single overhead light flickered inside the car’s galley, catching on polished steel and spilled coffee.

Mercer pulled the door wider with the muzzle of his pistol. The body lay slumped across the narrow aisle, half under a fold-down serving counter. A crew jumper, dark blue. The MI6 cover story painted Conductor Edward Halloway as a routine border-transit officer—a man paid to look the other way when certain passengers moved through the tunnel. Mercer had never met him. He’d only seen the file photo.

Halloway wasn’t looking anywhere now.

Camille crouched, pressed two fingers to the man’s throat. Held them there a touch longer than necessary. "Dead. Maybe eight, ten minutes. Manual strangulation, or close enough." She angled her head. "Ligature marks. Thin. Something like wire, or—" She stopped.

Mercer saw it at the same instant. On the galley floor, inches from the conductor’s outstretched hand, lay a silver cufflink. In the flickering glow, it winked once.

Camille picked it up. Turned it over. The engraved anchor-and-starburst pattern was unmistakable—a bespoke design from a Savile Row shop that housed one of MI6’s dead-drop fronts. Only a dozen were ever made.

She looked at Mercer’s left cuff. The matching link was missing.

"Don’t," he said.

"Don’t what?" Her voice had flattened. "Don’t ask why your cufflink is sitting next to a dead man we didn’t kill?"

"It’s not mine."

"It’s identical to yours."

"Mine are at home. In a drawer." He stepped closer, shoulder brushing the bulkhead, and held out his wrist. The left cuff was empty. "Pulled it off this morning. Felt wrong wearing them on an op."

"I didn’t know you wore them on ops at all."

"Occasionally." Mercer looked at the link in her palm. "They were a gift. From Fournier."

Camille’s jaw tightened. She knew the name. Everyone in the service knew the name—MI6’s most decorated case officer before the Lebanon station disaster that killed him eleven years ago. The disaster Mercer had never stopped chasing.

"Fournier gave you matching silver cufflinks," she said slowly, "with a regimental pattern so obscure they may as well be fingerprints."

"It wasn’t a marking system. It was a personal gift. He gave a set to each of the officers he mentored. There were four of us."

"So this—" She lifted the link. "—came from one of Fournier’s other students."

"Or someone who stole them."

Camille studied his face. He gave her nothing, because nothing was all he had. But the question hung between them like static: was he lying? After Prague, after Anna Kessler, after everything she might have hidden about Sokolov, he had no right to demand clean hands. She knew it. So did he.

"You checked the car," he said. "Anyone else?"

"Just him." She pocketed the cufflink. "The killer left it. That’s a message."

"It’s a frame."

"It’s a message, Mercer. If it were a frame, they’d have waited for your prints on it, or planted it on the body where CID would find it in London. This is a drop. They want you to find it."

He leaned against the galley counter, pain flaring through his ribs. The train sat dark and silent beyond the car’s forward door. Somewhere up ahead, behind a locked control-room door, Sokolov had announced himself. Then the intercom had died. That had been seven or eight minutes before Halloway’s estimated time of death.

"Unless," Mercer said, "the killer didn’t leave it."

"What?"

"Maybe Halloway took it. Someone wearing your link. He grabbed at them, pulled it loose, and died with it in his hand."

"Then who was wearing your cufflink that isn’t you?"

Mercer didn’t answer. He turned toward the forward door, shouldered it open, and stepped into the next car.

Passenger seating. Rows of empty business-class chairs. The overhead LEDs were still lit at half-power, casting everything in a bone-white dusk. Somewhere ahead, through the partition between cars, he heard a steady drip—condensation, or coolant, or blood.

Camille came up beside him. Her hand brushed his arm—brief, careful, the closest to an apology he’d get from her.

"We need the control car," she said. "The navigation override has to be accessed from the front of the train. Sokolov got there first."

"Then he’s waiting for us."

"Then we go anyway."

Mercer nodded. He took two steps forward, and the floor pitched hard beneath him—the train lurched, brakes hissing, metal shrieking against the rails. Camille grabbed a seat back for balance. Mercer wasn’t fast enough. His knee buckled, and he caught himself on the luggage rack, the wound in his side screaming as the train dragged to a full stop with a hydraulic sigh.

From somewhere ahead—two cars, maybe three—came the sound of a door rolling open. Then footsteps. Confident. Unhurried.

Mercer drew his pistol with his right hand. His left arm trembled.

A voice drifted down the aisle. Not Sokolov’s. British. Upper-crust, with a curl of amusement.

"Alex. You made it. I was starting to think the tunnel had eaten you."

Camille’s Glock came up, two-handed, searching for a target down the dim corridor. "Who’s that?"

Mercer knew the voice. He hadn’t heard it in four years, not since the memorial service for Fournier—not since the encrypted rebuke that followed the Prague operation. He’d assumed the man had retired. He’d assumed wrong.

"Camille," he said quietly, "stand down."

"Like hell I will."

"That’s my old control officer." Mercer swallowed against the copper taste in his throat. "His name’s Garrick. And if he’s wearing my cufflink, then he’s the one who’s been pulling Sokolov’s string from London."

The footsteps stopped. A shadow fell across the partition glass.

"Very good, Alex." Garrick’s voice was warm, almost paternal. "Though I’d have preferred you didn’t say that in front of your new friend. We do have standards."