Read Chapter 9: The Missing Virologist

The dining car stank of sweat and fear, and Élise had learned to breathe through her mouth.

She moved along the row of slumped passengers, checking pulses, peering at mucus membranes, cataloguing the glazed eyes that turned toward her with something between hope and accusation. Two hundred souls squeezed into a steel tube beneath the English Channel, and every one of them was now a vector.

“Fournier.”

Renaud’s voice cut through the low moaning. He stood at the far end of the car, his tablet clutched against his chest like a shield, his face a mask of bureaucratic irritation.

“We have a manifest discrepancy.”

Élise finished checking an elderly woman’s pulse—rapid but steady—and straightened. Her knees cracked. She hadn’t sat down in nine hours.

“Define discrepancy.”

“A passenger who hasn’t checked in.” Renaud tapped his tablet. “Dr. Paul Antoine. Medical credentials on file. Compartment C-14, Coach 6. He was marked present during the initial roster after the lockdown, but no one has seen him since.”

Medical credentials. The words landed in Élise’s chest like a struck match. Another doctor. Someone trained, someone who could help her process what she’d found in the ventilation filters, someone who might understand the implications of an engineered aerosolized pathogen blooming through a sealed train.

“No one’s seen him since when?”

“The first death.”

She was already moving, pushing through the press of bodies toward the forward cars. The corridor narrowed, and the air thickened with each step, that foul sweetness she’d first noticed an hour ago now cloying and unmistakable. Passengers huddled against the walls, some coughing into sleeves, others staring at nothing. A man grabbed her arm as she passed.

“When are they opening the doors? My wife needs a hospital.”

Élise pulled free without breaking stride. “Stay hydrated. Keep your mask on.”

The lies came easier now. She hated that.

Coach 6 was darker than the others. Two of the overhead fluorescents had died, leaving pools of shadow between the emergency strips. The door to C-14 was closed, and she had to brace herself before sliding it open.

Empty.

Except it wasn’t. A suitcase lay on the bunk, unzipped, clothes spilling out like a half-finished packing job. A brown leather satchel sat on the fold-down table, its brass clasp unlatched. Élise stepped inside and pressed her fingers to the satchel’s leather—cool. She opened it.

Stethoscope. Blood pressure cuff. A sealed pack of syringes in a sterile wrapper.

And a phone, face-down on the table, screen dark.

She picked it up. The lock screen glowed, showing a single missed call notification from an unknown number. She pressed her thumb to the home button—no response. She tried the side button, and the missed call disappeared, replaced by a battery indicator at twelve percent and a background photo of two children smiling at a beach.

Renaud appeared in the doorway, breathing hard. “You shouldn’t be in here without gloves.”

“He left his phone behind.” Élise held it up. “A doctor doesn’t leave his phone. Not voluntarily.”

“People panic. They drop things.”

“They don’t leave their luggage unzipped with their medical kit open.” She set the phone down and turned in a slow circle, scanning the compartment with fresh eyes. The sheets were rumpled, but not slept-in. The pillow bore no indentation. The trash bin was empty.

Someone had entered this cabin, opened their bags, and then left. And never come back.

“Check the cameras,” Élise said.

“The cameras have blind spots. You know that.”

“Then check the ones you have. He must have been recorded somewhere.”

Renaud shifted his weight. Something flickered across his face—hesitation, or calculation, she couldn’t tell which. “He’s one passenger. We have larger concerns.”

“He’s a virologist. His file says he’s a virologist. That’s not nothing, Renaud. That’s someone who might know exactly what we’re dealing with.” She stepped closer, lowering her voice. “Or someone who knew enough to disappear before the outbreak spread.”

That landed. Renaud’s jaw tightened.

“You think he’s involved?”

“I think he’s missing. And I think there’s an open vent in this cabin that’s not supposed to be open.”

She pointed to the far corner above the luggage rack. The ventilation grille was ajar, tilted sideways, its screws glinting where they’d been pried out. Fresh scratches marked the metal frame—recent, not part of the original installation.

Élise climbed onto the bunk and reached up. The grille swung easily under her fingers, revealing a dark duct barely wide enough for a man’s shoulders. She leaned closer and caught a smell beneath the stale recycled air: something sharp and chemical, clinging to the inside of the vent.

She had smelled that before. In the filters.

“Someone’s been in this duct system,” she said.

Renaud stared at her, and for the first time, his bureaucratic mask slipped. For a split second, she saw something raw beneath it—something that looked close to fear.

“That’s impossible.”

“It’s not. Look.” She pointed to faint smudges on the duct’s interior—dust disturbed, wiped along the walls. “This is recent. Within the last few hours. Someone crawled in through here, or they’re hiding in the space between the cars.” She dropped back to the floor. “Maybe both.”

Renaud’s phone buzzed. He glanced at it and his face went pale, something crossing it too quickly for her to read. He pocketed the device.

“I need to check something. Stay here.”

He was gone before she could respond, the door sliding shut behind him with a pneumatic hiss.

Élise stood alone in the dead man’s empty cabin, the vent still open above her, breathing the chemical-laced air. The phone buzzed again on the table. She looked at it.

The screen had lit up with a text message from a contact named only “S.”

*They’ve been activated. Move before the lockdown.*

The message sat there, two lines against the dark wallpaper, waiting. Then the screen flickered and died.

Élise pressed the power button. Dead. The twelve percent had been a lie—or the phone’s battery had been deliberately drained.

She pocketed it anyway.

Behind her, from somewhere deep in the train’s bowels, a muffled thud echoed through the ductwork. It could have been the machinery laboring. Or footsteps, moving fast and quiet through spaces no one was supposed to occupy.

Élise stepped out into the corridor, pulling C-14’s door shut behind her.

Dr. Paul Antoine had been on this train when it sealed. His medical kit was here. His phone was here. But he was gone.

And someone had sent him a warning.