Read Chapter 22: Reunion and Remorse

The infirmary smelled of antiseptic and salt. Sophie Lambert sat propped against three pillows, her wrists still wrapped in gauze where the restraints had bitten, spooning broth from a tin cup with trembling hands. Élise watched her from the doorway, the weight of the last hour pressing on her shoulders like a drowning current.

Sophie looked up. Dark circles carved hollows beneath her eyes. Her hair, once cropped neatly, now hung in greasy strands against her temples. But her gaze—that sharp, calculating gaze Élise remembered from conference panels and journal debates—was still there, burning through the exhaustion.

“You’re staring, Renard.”

Élise stepped inside and pulled the curtain closed behind her. “You look like shit.”

“Feel like it too.” Sophie set the cup down, wiped her mouth with the back of her hand. “But the broth helps. Naval rations are surprisingly decent when someone’s actually allowed to feed you.”

“No one’s allowed to feed you anymore. You’re free now.”

Sophie laughed—a dry, brittle sound. “Free. Right. I’ve been ‘free’ for three hours and I still haven’t figured out which door doesn’t have a guard behind it.”

Élise pulled the stool closer and sat. The ship hummed around them, the familiar groan of the *Atalante* at anchor. Outside the porthole, the Mediterranean glittered under a late-afternoon sun, indifferent to the secrets it held beneath its surface.

“I need to know everything,” Élise said. “What happened to you. What you saw down there. The failsafe—Lefèvre mentioned it, but he didn’t give details. He doesn’t know I know about it.”

Sophie’s expression flickered. “Lefèvre told you about the failsafe?”

“He let it slip. He thinks I’m leaving. Thinks I’ve accepted his deal.”

“And have you?”

Élise met her eyes. “Do I look like someone who accepts deals from men who keep people in naval brigs without charges?”

Sophie studied her for a long moment, then nodded slowly. “Good. Because if you’d taken that deal, you’d be signing a death warrant for three men who are still alive down there.”

The words landed like cold water. Élise leaned forward. “The research team. Dr. Moreau, Chen, and the new dive tech—Youssef. They’re trapped in the sub-level reactor. How do you know they’re still alive?”

“Because I was working with them until five days ago.” Sophie pulled her knees up, wrapped her arms around them. Her voice dropped, as if the walls themselves might be listening. “After I was taken, they didn’t just lock me in a cell. They put me to work. The reactor needs constant monitoring—it’s stable, but barely, and the failsafe is built into the core cooling system. Someone has to be down there to read the telemetry. I was the someone they grabbed.”

“Who grabbed you?”

“Navy contractors. Off-duty, no insignia. They came to my flat in Marseille at 3 a.m., said there was an emergency at the site that required my expertise. I was stupid enough to believe them for about four hours, until I realized the ‘emergency’ was that a reactor built thirty years ago was approaching its operational limit and no one wanted to be the one to call it in.”

Élise’s mind raced. “The reactor was built thirty years ago. By whom?”

“That’s the part that kept me up at night.” Sophie’s jaw tightened. “The city isn’t ancient, Élise. At least, not all of it. The structure—the streets, the public buildings, the harbor—that’s old. Possibly older than anything we’ve ever found. But the sub-level? The reactor chamber? That was constructed. By people with modern engineering techniques. The concrete mix, the alloy plating, the cable conduits—they’re contemporary. And they’ve been there for decades.”

Élise sat back, processing. “Marchand’s father. The original discovery in the 1970s. He found the city and—”

“And someone decided it was worth building on,” Sophie finished. “A secret facility inside a lost city. The perfect hiding place. No satellites, no sonar signature, no jurisdiction. Just a buried secret that no one was supposed to find.”

“But you found it.”

“I found reports of energy anomalies. Magnetic fluctuations in the water column. I came to investigate—” She stopped, pressed a hand to her chest, winced.

“Take your time.”

“No, we don’t have time.” Sophie’s voice cracked, then steeled. “The failsafe. It’s not a switch. It’s a tolerance limit. The reactor core is old, inefficient, and it’s been running hot for weeks. If the temperature exceeds a certain threshold, the cooling system vents seawater directly into the chamber to prevent a meltdown. That’s the failsafe—it floods the sub-level. But the sub-level is structurally connected to the city’s foundation. If it floods, the pressure differential will collapse the entire site. The city will fold in on itself like a paper lantern.”

“How long until the threshold is reached?”

“That’s what I was calculating when they pulled me out.” Sophie bit her lip. “After Lefèvre’s people came to get me—he claimed it was for my safety, that he’d been ordered to contain the situation. Five days ago, the core was running at eighty-two percent of tolerance. It gains roughly half a percent per day under normal load. At that rate, we have just over a month.”

“But the three researchers are still down there. They’re going to run out of air, food, water long before that.”

“They’ve been resupplied through a maintenance shaft—the same one they use to access the reactor. I was brought in through it. Food, water, medical supplies are cached at intervals. Whoever built this place planned for long-term occupation.”

Élise stood, paced to the porthole. The sun was lower now, painting the water in streaks of gold and copper. Somewhere beneath that shimmer, three people were trapped in a metal box inside a stone city, watching temperature gauges creep toward annihilation.

“There has to be a way to shut the reactor down manually,” she said. “A override, a kill switch.”

“There is.” Sophie’s voice dropped even lower. “But it’s inside the core chamber. You have to be physically present to engage it. That’s why the failsafe is so dangerous—the designers knew that anyone inside the chamber when it floods won’t survive. If they ever needed to destroy the reactor, they could just trigger the vent remotely and let the water do the rest. No witnesses.”

“Lefèvre said he didn’t trigger the bio-lab flood. He claimed someone else with knowledge of the site is active. Whoever that is—they’d know about the failsafe too.”

Sophie’s eyes widened. “You think they’re going to trigger it early.”

“I think someone in the navy wants the entire city erased, and they don’t care whether a failsafe does it naturally or a torpedo does it faster.” Élise turned from the porthole. “You said you can read the telemetry. Guide a team through the sub-level from up here?”

“I—yes. I memorized the schematics. The access tunnels, the security nodes, the maintenance routes. I could talk someone through it blindfolded.”

“Good. Because I’m going back down. And you’re coming with me—not into the water, but as my eyes. Lefèvre has a deal with me. He thinks I’m leaving at dawn.”

Sophie frowned. “But you’re not.”

“I’m not.” Élise crouched in front of her, took her hands. “Three people are trapped down there. Three people who trusted me to lead this expedition. I’m not going to let them drown because some admiral decided the truth was inconvenient.”

Sophie searched her face, and for a moment, Élise saw the woman she’d once known—brilliant, fearless, fiercely independent. Then something else flickered across her features. Fear.

“Élise, there’s something else. Something I didn’t tell Lefèvre, because I wasn’t sure he was on the right side.” She swallowed. “The reactor chamber—it’s not the only thing built beneath the city. There’s another level below it. Deeper. I only saw it on the schematics, and it was marked with a single word.”

“What word?”

Sophie’s grip tightened on Élise’s fingers. “‘Archive.’ Whatever this facility was built to protect—the reactor was just a power source. The city is guarding something else. Something they didn’t want anyone to find.”

Through the porthole, a shadow moved across the water. A naval patrol vessel, closing distance. Lefèvre’s promise to return before dawn took on a sharper edge.

Élise looked at Sophie, then at the sea that held answers she no longer trusted. “Then we find it before they do.”