Chapter 13
title: "The Architect's Son" wordCount: 3447
Finn's arms burn from carrying Cass's weight, and the blood she's coughing onto his shirt is flecked with black.
The medical wing corridor stretches ahead, emergency lighting casting everything in red. His shoulder slams into a doorframe. Cass's head lolls against his chest, her breathing shallow and wet. The dog tags under her shirt press into his sternum.
"Stay with me." He adjusts his grip, fingers slipping on her jacket. "Cass."
Her eyes flutter open. Unfocused. The scar through her eyebrow stands out white against fever-flushed skin.
"Eli's—" Her voice breaks into coughing. More blood. More black flecks that shouldn't exist in human lungs.
"Don't talk." Finn kicks open the maintenance access door. The stairwell beyond drops into darkness. "I've got you."
She tries to push away from him. Weak. Her blackened fingernails catch on his collar.
"Put me down."
"No."
"Finn—"
"I said no." He starts down the stairs, each step jarring. The metal treads ring under his boots. "You collapsed in a room Vera was actively purging. You think I'm leaving you for Council security to find?"
Cass's head drops back against his arm. Her lips move but no sound comes out. The dog tags shift under her shirt, catching the red emergency light.
Three flights down. His thighs shake. The maintenance tunnels branch in four directions, each one identical—gray concrete, exposed piping, the smell of recycled air and rust. He takes the leftmost passage because it slopes downward, away from the medical wing, away from anywhere Vera's people would think to look.
"Where—" Cass coughs again. The sound rattles in her chest like loose bolts in a container. "Where are you taking me?"
"Somewhere safe."
"Doesn't exist."
"Then somewhere safer than here." Finn's boot catches on a pipe junction. He stumbles, catches himself against the wall. Cass's weight shifts in his arms. "There's a clinic in Lower 6. Off the grid. Dr. Hallis owes my father a favor."
Cass's eyes snap into focus. Sharp. Cutting through the fever haze.
"Your father."
"He's not—" Finn adjusts his grip again. His forearms scream. "It's complicated."
"Everything's complicated." Her voice drops to a whisper. "Eli's dead."
The words hang in the recycled air between them. Finn keeps walking because stopping means acknowledging them, and acknowledging them means watching Cass break apart completely, and he can't do that while carrying her through maintenance tunnels with Council security potentially minutes behind them.
"I know," he says finally.
"Vera lied."
"I know."
"I gave her the chip for nothing." Cass's fingers tighten on his collar. "For a fucking lie."
Finn rounds another corner. The tunnel opens into a junction chamber, six passages branching off like spokes. He takes the third from the left—the one with the faded yellow stripe painted along the ceiling, the marker his father taught him to follow when he was twelve and sneaking into the Deep levels to watch the engineers work.
"The chip had an access code embedded in the encryption," Finn says. "I saw it before you handed it over. Copied the structure."
Cass goes still in his arms. Even her breathing seems to pause.
"You what?"
"I couldn't get the full code. But I got enough to reconstruct the pattern." He navigates around a cluster of exposed conduits. "If we can access the Archive files, we might be able to—"
"Might." Cass's laugh turns into coughing. Blood spatters his shirt. "That's surface thinking."
"It's all we have."
"We have nothing." Her head drops back against his arm. "I have nothing."
The tunnel slopes downward. Finn's boots splash through a puddle of condensation. The air grows warmer, thicker. They're passing through the thermal exchange level now, close to Lower 6. Close to Hallis.
"You have me," Finn says.
Cass doesn't respond. Her eyes have closed again. Her breathing evens out into something that might be sleep or might be unconsciousness. Finn can't tell the difference anymore.
The clinic door is unmarked, set into the tunnel wall between two massive coolant pipes. Finn kicks it three times—the pattern his father taught him, the one that means emergency, the one that means don't ask questions. The door opens immediately.
Dr. Hallis looks older than Finn remembers. Gray hair pulled back in a tight bun, surgical gloves already on, eyes that take in Cass's condition in two seconds flat.
"Inside." She steps back. "Quickly."
The clinic used to be a maintenance room. Still is, technically. But the tool racks now hold medical supplies, the workbench has become an examination table, and the air smells like antiseptic instead of machine oil. Hallis clears the table with one sweep of her arm. Equipment clatters to the floor.
"Put her down."
Finn lowers Cass onto the table. His arms shake with relief. Hallis is already cutting away Cass's jacket, exposing the blood-soaked shirt underneath. The dog tags swing free, catching the overhead light.
"How long has she been coughing blood?" Hallis presses a stethoscope to Cass's chest.
"Ten minutes. Maybe fifteen."
"And the black particulate?"
"Since the beginning."
Hallis's jaw tightens. She moves the stethoscope, listening. Her expression doesn't change but her movements become faster, more precise. She pulls a penlight from her pocket, checks Cass's pupils, then reaches for a syringe from the supply rack.
"This is a broad-spectrum antibiotic. Black market. Expensive." She taps the syringe, checking for air bubbles. "It might buy her a few weeks. Might not."
"What do you mean might not?"
"I mean whatever she inhaled during that purge is eating her lungs from the inside." Hallis injects the antibiotic into Cass's arm. "I've seen this before. Thirty years ago, when they first sealed the Archive levels. The engineers who went in to weld the doors—some of them came out coughing like this. Most of them were dead within a month."
Finn's hands curl into fists. The blood on his shirt has started to dry, stiff against his skin.
"There has to be something else."
"There is. Council medical. Full decontamination suite, targeted antivirals, lung regeneration therapy." Hallis pulls a blanket over Cass. "But that requires going through official channels, and something tells me that's not an option."
"It's not."
"Then she has weeks. Maybe less." Hallis strips off her gloves. "Keep her hydrated. Keep her warm. If the fever spikes above forty degrees, come back immediately. If it doesn't—" She pauses. "Make her comfortable."
Cass stirs on the table. Her eyes open, unfocused and glassy.
"Eli?" Her voice is small. Childlike. "Eli, where—"
"She's hallucinating," Hallis says. "The fever. It'll get worse before it gets better."
Finn moves to the table. Cass's hand reaches out, grasping at air. He catches it, holds it. Her fingers are ice cold despite the fever burning through her.
"I'm here," he says.
"You're not Eli." Cass's eyes focus on him for a moment. Recognition flickers. "You're the architect's son."
"Yes."
"Your father sealed the Archive." Her grip tightens. "He killed them."
Finn doesn't answer. Can't answer. Because she's right, and they both know it, and there's nothing he can say that will change what his father did thirty years ago.
Hallis moves to the sink, washing her hands. The water runs brown, then clear.
"She needs rest," Hallis says. "Real rest. Not maintenance tunnel floors and emergency stairwells."
"I can't take her home."
"Then stay here. There's a cot in the back room." Hallis dries her hands on a towel. "I'll check on her in a few hours. If she's still breathing, we'll talk about next steps."
She leaves through the tunnel door. The lock clicks behind her. Finn stands next to the examination table, still holding Cass's hand, watching her chest rise and fall in shallow, irregular breaths. The dog tags rest against her collarbone. He can just make out the engraving: ELIAS TENNANT.
"I'm sorry," Finn says to the empty room.
Cass doesn't respond. Her eyes have closed again. But her hand stays locked around his, fingers digging into his palm like she's afraid of falling.
The fever dreams start an hour later.
Cass thrashes on the table, tangling herself in the blanket. Finn tries to hold her still but she's stronger than she should be, fueled by whatever infection is burning through her system. Her eyes snap open but she's not seeing him—she's seeing something else, somewhere else.
"No." Her voice is raw. "No, Eli, you can't—"
"Cass." Finn catches her wrists. "You're dreaming."
"He's going down there." She struggles against his grip. "He's going to the Deep levels and I told him not to, I promised I'd stop him but I didn't, I let him go—"
"Cass, listen to me—"
"I broke my promise." Tears streak down her temples into her hair. "I broke my promise and now he's dead."
Finn releases her wrists. Cass curls onto her side, pulling her knees to her chest. The dog tags press into the table with a soft clink. Her breathing comes in gasps between words.
"He came home that day. Three months ago. Maybe four." Her eyes are open but unfocused, staring at the concrete wall. "He was terrified. I'd never seen him scared before. Not like that."
Finn pulls the cot from the back room, positions it next to the examination table. He sits, close enough to reach her if she needs him, far enough to give her space.
"What did he say?"
"He found something in Deep 8. An access panel that shouldn't exist." Cass's voice drops to a whisper. "Behind it was a stairwell. Going down. He followed it for twenty minutes before he realized—it wasn't on any map. Wasn't in any schematic. It just kept going down and down and down."
"The Archive."
"He didn't know that then. He just knew it was wrong." Cass's hand moves to the dog tags, fingers closing around them. "He made me promise. Stay away from the Deep levels, no matter what. No matter what I heard, no matter who asked. Just stay away."
"But you didn't."
"I didn't." The words come out flat. Empty. "Two weeks later, Dex showed up asking about salvage work in Deep 7. Good money. Easy job. And I thought—I thought Eli was being paranoid. Thought he was seeing patterns that weren't there."
Finn leans forward, elbows on his knees. The clinic's overhead light flickers, casting shadows across Cass's face.
"So you took the job."
"I took the job. And Eli found out. And he—" Cass's voice breaks. "He went down there to stop me. To pull me out before I found whatever he'd found. But he was too late. I'd already seen the sealed doors. Already started asking questions."
"That's not your fault."
"Isn't it?" Cass's eyes finally focus on him. Red-rimmed. Burning. "He died trying to protect me from something I was too stupid to stay away from. That's exactly my fault."
Finn wants to argue. Wants to tell her that Eli made his own choices, that she couldn't have known, that guilt like this will eat her alive faster than any infection. But the words stick in his throat because he knows what it's like to carry a father's sins, to wake up every morning knowing that someone you love destroyed lives and you did nothing to stop it.
"My father helped seal the Archive," Finn says instead. "He was part of the engineering team that welded the doors shut. He came home that night and didn't speak for three days. My mother thought he was sick. I thought he was angry at me for something I'd done."
Cass watches him. Waiting.
"Years later, I found him in his workshop at two in the morning, drunk, crying over a set of blueprints." Finn's hands clench. "He told me there were people still alive inside when they sealed it. That he could hear them screaming through the doors. That the Council ordered them to weld it shut anyway, and he did it because he was afraid of what would happen if he refused."
"And you forgave him."
"No." Finn meets her eyes. "I understood him. That's different."
Cass's fingers loosen on the dog tags. Her breathing has evened out, the fever temporarily retreating. She looks smaller somehow, curled on the examination table in a stranger's clinic, wearing a dead man's tags and carrying a dead man's guilt.
"Eli used to say I thought too much," she says quietly. "That I'd run every scenario until I found the one where everyone died, then convince myself it was inevitable."
"Was he right?"
"Usually." something close to amusement crosses her face. "But not this time. This time everyone actually did die."
The tunnel door opens. Finn's hand moves to the wrench on his belt—the only weapon he has—but it's just Hallis returning with a tray of supplies. She sets it on the workbench, glancing at Cass.
"Fever broke?"
"For now," Finn says.
"Good. She'll need her strength." Hallis pulls a vial from the tray, holds it up to the light. Clear liquid, faintly blue. "This is a neural stabilizer. It'll keep the hallucinations manageable. But it's also a sedative. She'll sleep for six, maybe eight hours."
"Do it," Cass says from the table.
Hallis looks at her, then at Finn. He nods. The doctor prepares the injection, swabs Cass's arm, slides the needle in with practiced efficiency. Cass's eyes start to close before Hallis even withdraws the syringe.
"Thank you," Finn says.
"Don't thank me yet." Hallis caps the needle, drops it in a disposal container. "Your father's on his way here."
Finn goes still. "What?"
"He called ten minutes ago. Said he needed to see you. Said it was urgent." Hallis crosses her arms. "I told him no. He's coming anyway."
"How did he know I was here?"
"Because he's Marcus Osric, and he knows every off-grid clinic, every illegal operation, every shadow in this station." Hallis moves to the door. "He'll be here in twenty minutes. Maybe less. If you want to leave before he arrives, now's your chance."
She exits into the tunnel. The door closes. Locks.
Finn looks at Cass, already unconscious on the table, her breathing deep and even for the first time since he found her. He could carry her out. Find another hiding place. Keep running until they're far enough from his father, from Vera, from all of it.
But his arms still ache from carrying her the first time, and there's nowhere left to run, and maybe—maybe his father knows something that could help. Something about the Archive, about the sealed levels, about what really happened thirty years ago.
Finn sits back down on the cot. Waits.
Marcus Osric arrives drunk.
Finn smells the alcohol before his father even enters—cheap synthetic whiskey, the kind that burns going down and leaves you hollow after. The tunnel door opens and Marcus stumbles through, catching himself on the doorframe. His hair is uncombed, his shirt untucked, his eyes red and unfocused.
"Finn." His father's voice cracks. "Thank god. I thought—I thought you might not—"
"What are you doing here?"
Marcus closes the door behind him. Locks it. His hands shake as he turns the bolt. When he faces Finn again, there are tears on his cheeks.
"I need to tell you something." Marcus moves to the workbench, grips the edge for support. "I should have told you years ago. Should have told everyone. But I was afraid, and I was weak, and I—" He breaks off, shoulders shaking. "I'm so sorry, Finn. I'm so goddamn sorry."
Finn stands. His father has apologized before—for missing birthdays, for broken promises, for the distance that grew between them after Finn's mother died. But this is different. This is the sound of a man confessing.
"What did you do?"
"The Archive." Marcus wipes his face with his sleeve. "I told you we sealed it. That there were people inside. But I didn't tell you why."
"The Council ordered it."
"The Council ordered it because I told them to." Marcus's voice drops to a whisper. "I was the lead engineer. I was the one who said it was necessary. That the contamination was spreading too fast, that if we didn't seal it immediately, the entire station would be compromised."
Finn's chest tightens. The clinic walls seem to close in.
"Was it true?"
"I don't know." Marcus laughs, bitter and broken. "I ran the numbers. I saw the projections. But I was scared, Finn. I was so scared that I might have—I might have convinced myself it was worse than it was. And by the time I realized, by the time I thought maybe we could have saved them—"
"The doors were already sealed."
"The doors were already sealed." Marcus slides down the workbench to the floor, sitting with his back against the concrete. "Forty-seven people. I counted them. Forty-seven people screaming on the other side of those doors while I welded them shut."
Finn thinks of Cass on the examination table. Of Eli's face on that video, coughing blood. Of Subject 47 and the timestamp that read three days ago.
"You've been sabotaging the station," Finn says. "The system failures. The pressure drops. That's you."
"I've been trying to balance the equation." Marcus's head drops back against the wall. "Forty-seven people died because of me. So I've been saving forty-seven people. One at a time. Diverting resources to Lower 6. Rerouting medical supplies. Disabling security protocols so people can escape when they need to."
"That's insane."
"I know." Marcus closes his eyes. "But it's all I have. It's the only way I can sleep at night."
Finn moves to his father, crouches in front of him. Marcus smells like whiskey and sweat and desperation. Up close, Finn can see how much older he looks—the lines around his eyes, the gray in his stubble, the way his hands won't stop shaking.
"How many have you saved?" Finn asks.
"Thirty-two." Marcus opens his eyes. "Fifteen more to go. Then maybe—maybe I can stop."
"Dad—"
"But that's not why I came here." Marcus grabs Finn's shoulders. His grip is weak but urgent. "The Archive wasn't the first time. Two years before that, we sealed Deep 9. Same contamination. Same projections. Same decision."
Finn goes cold. "How many people?"
"I don't know. The records were classified. But Finn—" Marcus's voice drops to barely a whisper. "Some of them are still—"
The tunnel door explodes inward.
Security forces pour through—four of them, full tactical gear, stun weapons raised. Behind them, moving with careful precision, is Soren Latch. Vera's son. His face is expressionless as he surveys the clinic, taking in Marcus on the floor, Finn crouched beside him, Cass unconscious on the examination table.
"Marcus Osric." Soren's voice is flat. Official. "You're under arrest for sabotage, treason, and conspiracy against the Council."
Marcus doesn't resist as two security officers haul him to his feet. He's still looking at Finn, eyes desperate, mouth forming words he can't say with Soren watching.
"Wait." Finn stands. "He was just—"
"Step back, Mr. Osric." Soren's hand moves to his weapon. "This doesn't concern you."
"He's my father."
"He's a traitor." Soren nods to his team. They drag Marcus toward the door. "And if you interfere, you'll be arrested as an accomplice."
Marcus struggles against their grip. Not trying to escape—trying to turn back to Finn.
"The Archive wasn't the first time," he shouts. "We sealed Deep 9 two years before that, and some of them are still—"
The stun round hits him mid-sentence. Marcus convulses, then goes limp. The security officers catch him before he hits the floor, hauling his unconscious body through the tunnel door. Soren follows, pausing at the threshold to look back at Finn.
"Your father's been under surveillance for six months," Soren says. "We know about the sabotage. We know about the diversions. And now we know about Deep 9." He glances at Cass on the table. "Tell Ms. Tennant that my mother sends her regards."
The door closes. Locks from the outside.
Finn stands frozen in the empty clinic, his father's words echoing in his ears: some of them are still—
Still what? Still alive? Still sealed? Still waiting?
Behind him, Cass stirs on the examination table, the sedative beginning to wear off. Her hand moves to the dog tags at her throat. Her lips form a single word, barely audible:
"Eli."
And Finn realizes with sudden, terrible clarity that whatever his father was about to confess, whatever is still happening in Deep 9, it's connected to everything—to Eli's death, to the chip, to the Archive, to the forty-seven people his father killed and the thirty-two he tried to save.
The tunnel door's lock clicks. Once. Twice.
Someone's trying to get in.