The Ones Who Climb
title: "The Engineer's Compromise" wordCount: 2638
Finn was waiting outside her door, and Cass's first instinct was to run—the second was to hit him.
She stopped three meters away, hand already moving toward the wrench in her belt. The corridor was empty except for them, the overhead lights flickering in their usual pattern. Finn stood with his back against the wall beside her door, arms crossed, looking like he'd been there a while.
"Don't." His voice was quiet. "I'm not here to turn you in."
"Then why are you here?"
He pushed off the wall, hands rising slowly, palms out. Empty. "I need to know if I'm making the right choice."
Cass didn't move. Her fingers stayed on the wrench, metal warm from her body heat. "What choice?"
"The one I made three hours ago when my father found me in the Archive corridor." Finn's hands were still raised, like she was pointing a weapon at him instead of just thinking about it. "The one I'm still making by being here instead of in my quarters like he told me to be."
The lights flickered again. Somewhere down the corridor, a door hissed shut.
"Your father." Cass's grip loosened on the wrench. "Security didn't catch you."
"No." Finn lowered his hands slowly. "He did. He was waiting when I came out. Said he'd been tracking my access codes all night, watching where I went." His teeth pressed together. "He made the security footage disappear. Told me to go home and forget what I'd seen."
Cass studied his face. The exhaustion there looked real—shadows under his eyes, hair disheveled like he'd been running his hands through it. But real exhaustion didn't mean real honesty.
"And you're here because you want permission to disobey him?" She let her hand fall away from the wrench. "That's surface thinking. You don't need me for that."
"I need to know what I'm disobeying him for." Finn took a step closer. "I need to know if what we found in that Archive is worth destroying my relationship with my father. Worth losing my position. Worth—" He stopped. "I need to know if you're telling me the truth."
The words hit harder than Cass expected. She'd been lied to, used, manipulated by people who claimed to want the truth. Now here was someone asking her to prove she was different.
"Come inside." She moved past him to her door, keying in the code. "If we're having this conversation, we're not having it in the corridor."
The door sealed behind them and Cass's quarters felt smaller with Finn in them. He stood near the entrance, not moving further in, like he was giving her space to change her mind about letting him stay.
Cass pulled off her jacket and hung it on the wall hook. Eli's dog tags clinked against her chest. "What exactly did your father say?"
"That the Archive investigation was classified Council business." Finn's eyes tracked the small room—the narrow bed, the workbench covered in salvaged parts, the single chair. "That I'd accessed restricted files without authorization. That if I valued my position and my family's reputation, I'd forget I'd ever been there."
"But he didn't report you."
"No." Finn's hands flexed at his sides. "He covered for me. Made it look like a system glitch, a maintenance error. He protected me."
"And now you feel guilty." Cass sat on the edge of her bed, the only real furniture in the room. "He saved you, so you owe him silence."
"Don't you think I should?" Finn's voice rose slightly. "He's my father. He's spent thirty years keeping this vault running, making impossible decisions, sacrificing—"
"Six people have been screaming in Deep 9 for thirty years." Cass cut him off. "Your father knows about it. The whole Council knows. They've been listening to it and doing nothing."
Finn went still. "How do you know that?"
"Dex told me." Cass pulled the folded maps from her jacket pocket and spread them on the bed. "He's been tracking the fungal growth patterns. There's a spiral, Finn. Everything converges on Deep 9, and there's a door down there that won't open and people behind it who've been screaming since before we were born."
Finn moved closer, his engineer's mind already processing the patterns on the maps. His finger traced the spiral, following the lines Dex had drawn. "This can't be natural growth. This is—"
"Intelligent." Cass watched his face change as he understood. "The fungus is planning something. It's been planning for decades. And the Council knows."
"My father wouldn't—" Finn stopped. His finger had reached the center of the spiral, the point where all the lines converged. "Deep 9. That's where the original outbreak started. Where they sealed the first infected sectors."
"Where they sealed people inside and left them to die." Cass's voice was flat. "Or worse. Left them to scream."
Finn's hand dropped from the map. He stood there, staring at the patterns, and Cass could see the moment his certainty cracked. The moment he stopped defending what he'd been taught and started questioning it.
"There's more." Cass folded the maps carefully. "Someone stole a data chip from my quarters. It had encrypted files from the Archive, information about the murders, about Eli. I was going to find someone to decrypt it."
"When?" Finn looked up. "When was it stolen?"
"While I was in the Rattle Ward." Cass met his eyes. "Someone knew I had it. Someone knew where I'd be and how long I'd be gone."
Finn was quiet for a moment. Then: "I could have decrypted it."
"What?"
"I have access to Council decryption equipment. Maintenance clearance for the communication systems." He ran a hand through his hair. "If you'd asked me, I could have decoded those files in an hour."
The implications settled between them like dust. Cass felt her chest tighten.
"Which means whoever took it—"
"Has the same access." Finn finished. "Someone in the Council infrastructure. Someone with clearance and knowledge of encryption protocols." He looked at her. "Someone who knew you had it and knew you'd be vulnerable."
Cass stood, pacing the small space. Three steps to the wall, three steps back. "Your father has that access."
"So does half the Council." But Finn's voice was strained. "So do their assistants, their security chiefs, their—"
"Your father knew you were in the Archive." Cass stopped pacing. "He was tracking your access codes. He knew where you were and what you were looking at."
"That doesn't mean he's involved in the murders."
"No." Cass crossed her arms. "It just means he's involved in covering them up."
Finn's mouth tightened. For a moment she thought he'd leave, walk out and choose his father's version of the truth over hers. But he stayed.
"What did the files say?" His voice was quieter now. "The ones on the chip. What did you see before it was stolen?"
Cass hesitated. She'd been keeping secrets for so long, holding information close because information was the only weapon she had. But Finn had just chosen to be here instead of safe in his quarters. He'd chosen questions over comfort.
"Vera admitted to killing Eli." The words came out harder than she intended. "She told me directly. Said it was necessary, that he knew too much, that she did what the moment required."
Finn's she stared. "She confessed?"
"She bragged." Cass's nails dug into her palms. "Like it was just another decision. Just another sacrifice for the greater good."
"Then we have her." Finn took a step forward. "We can—"
"We can what?" Cass's voice was sharp. "Tell the Council that one of their own admitted to murder? They already know, Finn. They've always known. The question isn't whether Vera killed him. The question is why, and what else they're hiding."
Finn opened his mouth, closed it. His engineering mind was working through the problem, trying to find the logical solution, the clean answer. But there wasn't one.
"The patient in the Rattle Ward." Cass's voice dropped. "She used a code. A navigation pattern Eli and I made up when we were kids. No one else knew it."
"What did she say?"
"That he's alive." The words felt like glass in her throat. "She kept tapping it out, over and over. 'He's alive.'"
Finn stared at her. "But Vera said—"
"I know what Vera said." Cass turned away, facing the wall. "I know what I saw. I buried him, Finn. I put him in the ground myself." Her hand moved to the dog tags under her shirt. "But that patient knew our code. She knew something she shouldn't know."
The the pause extended longer than comfortable. Cass could hear Finn breathing behind her, could feel him trying to process information that didn't fit together, pieces that refused to make a coherent picture.
"What if Vera lied?" His voice was careful. "What if she wanted you to think he was dead?"
"Why?" Cass turned back. "What's the point?"
"Control." Finn's eyes were bright now, his mind racing. "If you think he's dead, you stop looking for him. You focus on revenge instead of rescue. You become predictable."
Cass's chest felt tight. The possibility was too big, too dangerous to hold. If Eli was alive—if he'd been alive this whole time while she'd been grieving—
"That's surface thinking." But her voice lacked conviction. "You're making it more complicated than it is."
"Am I?" Finn moved closer. "Or are you making it simpler because the alternative is too hard to face?"
The words hit like a physical blow. Cass wanted to push back, to shut him down, to retreat behind the walls she'd built. But he was right. She'd been so focused on Vera's guilt, on the conspiracy, on the murders, that she hadn't let herself consider the one possibility that terrified her most.
That Eli might still need her.
That she might have failed him by giving up.
Cass sat back down on the bed, suddenly exhausted. Finn took the chair at her workbench, giving her space but staying close enough to talk.
"I don't know what to believe anymore." Her voice was rough. "I don't know what's real."
"Then we find out." Finn leaned forward, elbows on his knees. "We get that data chip back. We decrypt the files. We go to Deep 9 and we open that door."
"Just like that."
"No. Not just like that." He met her eyes. "But we start. We take the next step and then the one after that. We run the numbers until we have an answer."
Cass almost smiled. Almost. "You make it sound simple."
"It's not simple. It's just necessary." Finn's expression was serious. "My father told me to forget what I saw. To go home and be quiet and let the Council handle it. But I can't do that. Not after seeing those files. Not after knowing what's in Deep 9."
"Your father will find out." Cass watched him. "He'll know you didn't listen."
"I know."
"You'll lose everything."
"Maybe." Finn's hands were steady. "But I'll know I tried. I'll know I didn't just accept the easy answer because it was comfortable."
The words hung between them. Cass thought about Eli, about the years she'd spent scavenging and surviving and never questioning why things were the way they were. About how she'd accepted his death because accepting it was easier than fighting the Council, easier than believing she could change anything.
"Why are you really here?" She asked it quietly. "You could have gone to someone else. Someone with more power, more connections. Why come to me?"
Finn was quiet for a long moment. When he spoke, his voice was careful. "Because you're the only person I've met who asks the questions no one else will ask. Who looks at the system and sees the cracks instead of just accepting that this is how things are." He paused. "And because I think you're the only person who might actually do something about it."
Cass felt something shift in her chest. Not trust, not yet. But the possibility of it.
"I need to ask you something." Finn's eyes were steady on hers. "And I need you to answer honestly."
"What?"
"Do you trust me?" He didn't look away. "Or do you just need me?"
The question cut deeper than Cass expected. She could lie, could deflect, could give him the answer that kept him useful without making her vulnerable. That's what she'd always done before. Keep people at arm's length, use them for what they could provide, never let them close enough to hurt her.
But Finn had just risked everything to be here. He'd chosen truth over safety, questions over comfort. He deserved better than her usual walls.
"I don't trust anyone." The words came out rough. "I haven't since Eli died. Since before that, maybe. Trust gets you killed in the lower levels. Gets you used and discarded."
Finn's expression didn't change. He just waited.
"But." Cass forced herself to continue. "I'm trying. With you. I don't know if that's enough, but it's what I have."
The silence that followed felt different than before. Heavier. More honest.
"It's enough." Finn's voice was quiet. "For now, it's enough."
Cass felt her shoulders relax slightly. She hadn't realized how tense she'd been, waiting for him to demand more, to push for guarantees she couldn't give. But he'd accepted what she could offer and asked for nothing else.
"We need a plan." She stood, moving to the workbench. "Whoever has that chip is going to decrypt it if they haven't already. They'll know what we know, maybe more."
"Then we need to know who has it." Finn joined her at the workbench. "We narrow down who has the access, the knowledge, and the motive."
"Your father—"
"Has all three." Finn's voice was tight. "But so do others. Councilor Latch, obviously. Her security chief. The Archive administrators." He paused. "We need to think about who knew you had the chip in the first place."
Cass ran through the timeline in her head. She'd taken the chip from the Archive, brought it back to her quarters, hidden it in her workbench. The only people who knew she'd been in the Archive were—
"You." She looked at him. "And whoever was monitoring the security feeds."
"Which my father erased." Finn's teeth ground together. "Which means he saw them first."
"Or someone else did and told him." Cass picked up a piece of scrap metal from the workbench, turning it over in her hands. "We're missing something. Some connection we're not seeing."
Finn was quiet, his engineer's mind working through the problem. Then: "The Rattle Ward patient. The one who used your code. How did she know it?"
"I don't know."
"But someone taught her." Finn's eyes were bright. "Someone who knew the code. Someone who had access to her."
The implications settled like ice in Cass's stomach. "Eli."
"Or someone who knew Eli well enough to learn it from him." Finn leaned against the workbench. "Someone who's been in contact with the Rattle Ward patients. Someone who knows what's really happening down there."
Cass's mind raced. The Rattle Ward was restricted, heavily monitored. Only medical staff and Council-approved personnel had access. Which meant—
A sound in the corridor outside. Footsteps, multiple sets, moving fast.
Cass and Finn froze, eyes meeting. The footsteps stopped outside her door.
"Maybe they'll pass." Finn's voice was barely a whisper.
The door crashed open.
Soren Latch stood in the frame with two security officers flanking him, their hands on their weapons. His eyes moved from Cass to Finn, taking in the maps on the bed, the two of them standing close at the workbench.
His expression was unreadable.
"Councilor Latch wants to see you both." His voice was flat, professional. "Now."