Read Chapter 29: The Missing Scientist Found

The water had settled into a sickly calm by the time Finn could stand without the world tilting. His hands still trembled from the fever, but the haze had receded enough for him to grip a railing and make his way along the gunwale of the *Gannet*. Around him, the flotilla bobbed in the grey-brown expanse that had once been the streets of the low zone. Second-story windows gaped like empty sockets, and the occasional roof peak broke the surface like a drowned animal's spine.

Mara found him at the bow, watching the still water. She said nothing for a long moment, then handed him a tin cup of something hot that smelled of boiled herbs and desperation.

"Tess wants you in the mill. There's a signal coming through on the deep-line we thought was dead."

Finn drank. The liquid burned going down, but it steadied his hands. "The council?"

"Unknown. It's encrypted, but it's coming from the core. From below the core."

He followed her across the linked boats, stepping from deck to deck with the practiced ease of a man who had spent his life on water. The high-zone survivors watched him pass with a mixture of fear and hope that sat uneasily on their faces. They were thin, wrapped in whatever blankets the low-zone families had spare, and they clutched their belongings like children clutching toys in a storm. One woman reached out as he passed, her fingers brushing his sleeve.

"Are we going to live?" she asked.

Finn paused. He looked at her—she was perhaps sixty, with the soft hands of someone who had never hauled a rope or patched a hull. "We're working on it, ma'am."

It was not a lie. It was also not the whole truth, but she seemed to take it for what it was worth, and she let her hand fall.

The mill's main floor had been converted into a combination of infirmary, command post, and shelter. Danny lay on a cot near the far wall, his leg wrapped in bandages that had already darkened with seepage. He was awake, which was something. His eyes tracked Finn across the room and he raised one hand in a weak greeting. Finn nodded back, then turned to where Tess stood at a jury-rigged communications console, a pair of headphones pressed to one ear.

"Talk to me," Finn said.

Tess pulled the headphones down around her neck. Her face was drawn, but her eyes had the sharp glint of a woman who had found something worth chasing. "There's a signal coming from the core. Not from the surface. From below. It's been broadcasting on a closed maintenance channel for the past hour, repeating the same message."

"What does it say?"

"Not much. Just a name and a request for extraction. Doctor Mei Chen."

Finn frowned. The name was familiar, though it took him a moment to place it. Doctor Chen had been the public face of the flood management program before the walls went up. She had given press conferences about sustainable water control, about the future of the city, about how the new systems would protect everyone. The official reports had listed her as killed in the early unrest, one of many casualties of the rising waters.

"Voss said she was dead," Finn said slowly. "He used her death to justify the emergency powers. Said the program had lost its architect and he had to take direct control."

"He lied," Tess said simply. "She's alive. And she's been broadcasting for help from somewhere underneath the financial core."

Finn looked at the map spread across the table—the old maintenance schematics that Danny had secured from the barrier core. He traced a finger along the lines that marked the deep utilities: the water mains, the sewer systems, the emergency bunkers that had been built in the decades before the floods, when the city still believed it could wall itself off from the sea.

"Safe rooms," he said. "The old engineers built them under the major structures. Deep enough to survive a direct hit. If they kept her alive, they would have kept her there."

"You want to go get her," Mara said. It was not a question.

"The shield array is down. The water in the core is rising." Finn looked up. "We've equalized the pressure, but that only stops the bleeding. We can't live like this. We need someone who understands the systems well enough to build something that works. Something permanent."

Tess was already pulling up the maintenance schematics on her screen. "The deep maintenance shafts run from the barrier core to the financial district. They were designed to be serviced by rail pods. If the power is out, the pods won't run, but the tunnel itself should still be accessible."

"I'll go," Finn said.

Danny stirred on his cot, his voice rough. "You're running a fever, Finn. You can barely stand."

"I can stand well enough to paddle a boat." Finn turned to Tess. "How deep is she? Can we reach her by water?"

"No. The tunnel shafts are dry—they were sealed against flood intrusion. But there's a maintenance hatch on the surface, about a hundred meters from the core's eastern edge. If the water has risen to the roofline, we'd need to dive to reach it."

The room went quiet. Finn considered his options. He was not a strong swimmer in the best of times, and these were far from the best of times.

"I know the dive route," Mara said quietly. "I mapped the core's eastern perimeter during the reconnaissance runs. The hatch is on a raised platform, about three meters below the current surface line. I can reach it."

"You'll need to bring her back out through the water," Tess said. "Do we have dive gear?"

"Two tanks of air. Wet suits we stripped off the drowned security checkpoint." Mara's face was grim. "They're not much, but they'll work."

Finn made the call. "Take Carver with you. He's steady in the water, and I don't want you going in alone."

Mara nodded and left to gather the gear. Finn watched her go, then crossed to Danny's cot and knelt beside him.

"How's the leg?"

"Broken, probably. But it'll mend." Danny looked up at him with tired eyes. "The evidence is safe in the dry-bag. I checked it twice. It's enough to hang Voss and the whole council."

"Good." Finn squeezed his shoulder. "Rest. When this is done, we're going to need your hands on the charts again."

Danny almost smiled. "You plan on there being a 'when this is done'?"

"I plan on there being a lot of things." Finn stood, steadying himself against a table as the room tilted briefly. "Starting with finding out what Doctor Chen knows."

The wait was the worst part. Finn spent it pacing the mill's upper level, watching the water through the broken windows. Tess worked the communications console, monitoring the channel for any sign that the signal had changed or stopped. The minutes stretched into an hour, then two.

He was about to call it and go after them himself when the water at the eastern edge of the flotilla broke. Mara surfaced first, pulling herself onto the deck of a nearby barge with the wet suit slick against her skin. Carver surfaced a moment later, but he was not alone. He had one arm wrapped around the shoulder of a small woman in a tattered lab coat, her grey hair plastered to her skull, her face pale but her eyes alert.

Finn was already moving toward them. By the time he reached the barge, Mara had helped the doctor onto the deck and was peeling the emergency blanket from her own pack to wrap around the woman's shivering shoulders.

"Doctor Chen?" Finn said.

She looked up at him. Her gaze was steady, measuring. "You're Finn Delaney. The boatman who opened the gate."

"Word travels fast."

"Signal travels faster." She hugged the blanket tighter around herself. "I've been listening. I know what happened above. I know what Voss tried to do. And I know what you did to stop him."

Finn crouched in front of her, bringing himself to her eye level. "Doctor, we need your help. The city is half under water. The shield array is destroyed. The low zone won't drain back out on its own—the water table has risen too far. If we don't do something, both zones will be permanently uninhabitable within a year."

Chen's lips pressed into a thin line. "You want me to fix what I built."

"We want you to help us build something new. Something that works for everyone. Not a wall that divides the city, but a system that manages the water—keeps the streets dry enough to walk, the buildings safe enough to live in. It won't be the old London. But it could be a London that survives."

For a long moment, the doctor said nothing. Then she reached into the pocket of her lab coat and pulled out a folded piece of plastic, sealed against the water. She unfolded it carefully, revealing a hand-drawn diagram of pipes and pumps and filtration systems.

"I started designing this two years ago," she said quietly. "The day Voss made me build the shield array instead. I knew the walls would never be enough. If the climate kept rising, the city would need to breathe with the water, not fight it." She held the diagram out to Finn. "It's rough. But the principles are sound. With the right materials and enough hands, we could make it work."

Finn took the diagram. The paper was creased and worn, covered in annotations in a cramped, precise hand. It was the most hopeful thing he had seen in weeks.

"Tess," he called over his shoulder. "Get the engineers together. Tell them we have a new project."

The mill bustled with sudden activity. Voices rose and fell as word spread through the flotilla. Finn stood on the barge deck, the diagram in his hands, and watched the high-zone survivors and the low-zone families begin to move together—dragging equipment, handing tools, sharing what they had. It was not trust, not yet. But it was a start.

Doctor Chen rose to her feet, still wrapped in the emergency blanket, and looked out over the flooded city. The sun was breaking through the grey overcast, casting long streaks of light across the water. She was silent for a long moment, then she turned to Finn.

"Show me where we're going to build."