Chapter 21
title: "The Nursery Protocol" wordCount: 2483
The footsteps stop just outside the circle of red emergency light, and Eli's voice drops to a whisper: "Don't let them see you're afraid—they can taste it in your sweat."
Cass freezes. Her brother's eyes glow brighter in the darkness, twin points of bioluminescence that track something she can't see. The air smells wrong—sweet rot and copper, like meat left too long in summer heat.
"How many?" Finn's back presses against the wall beside her.
"Three. Maybe four." Eli tilts his head, listening. "They're not here for me."
A dragging sound echoes from the corridor. Something heavy being pulled across concrete. Cass's hand finds the knife at her belt, fingers closing around the grip. The metal is warm from her body heat.
"What do they want?"
"To add you to the network." Eli's words come slower now, each syllable deliberate. "The source is hungry. It's always hungry."
The dragging stops. In the silence, Cass hears breathing that isn't human—wet, rattling, like lungs filled with fluid. Her own breath catches in her throat.
"Eli." She keeps her voice level. "Tell me what the Council did to you."
He turns toward her, and the fungal threads beneath his skin pulse with light. "They kept me alive. Fed me. Monitored my vitals while the infection spread." His hand lifts, trembling, to touch the growth on his neck. "They wanted to understand how it communicates. How it thinks."
"And?"
"It doesn't think like us. It's older. Patient." Eli's eyes flicker. "They put electrodes in my skull. Mapped the neural pathways as the mycelium integrated with my brain tissue. Recorded everything."
Finn moves closer, his tablet screen casting blue light across his face. "They were using you as a translator."
"More than that." Eli's laugh is bitter, broken. "They were teaching it. Showing it how we organize information, how we make decisions. Every question they asked me, every test they ran—I was feeding it data about human cognition."
The breathing in the corridor grows louder. Closer.
"And now it knows enough." Cass's nails dig into her palms. "That's what you're saying."
"It knows how to want things. How to plan." Eli's voice drops to barely audible. "How to hunt."
Finn's fingers fly across his tablet, the screen reflecting in his glasses. "There has to be an emergency protocol. Containment measures for exactly this scenario."
"Run the numbers all you want." Eli slumps against the wall, leaving a smear of something dark and viscous on the concrete. "The Council planned for containment failure. They didn't plan for the source to wake up."
"What's the difference?"
"Containment failure means infected individuals breach quarantine. The source waking means the entire network becomes active. Coordinated." Eli's chest heaves with effort. "Every infected person in Deep 9 is connected now. They're not individuals anymore. They're fingers on the same hand."
Cass watches her brother's face, searching for the person she remembers. The kid who taught her to pick locks, who shared his rations when food was scarce. The threads beneath his skin writhe like worms.
"How long do you have?"
"Before I'm gone?" Eli's smile doesn't reach his eyes. "I'm already gone, Cass. What's left is just meat and memory."
"That's surface thinking."
The words hit him like a slap. His eyes widen, and for a moment the glow dims. "You remember."
"You said it every time I wanted to give up on a job. Every time I thought something was impossible." Her throat tightens. "You taught me that."
"I taught you a lot of things." Eli's hand reaches toward her, then falls. "I should have taught you when to walk away."
A metallic screech cuts through the chamber. The door shudders in its frame, and something on the other side begins to pound against it. The rhythm is wrong—too fast, too many impacts at once.
Finn's tablet chimes. "Found it. Sterilization protocol. Chemical gas flood, designed to kill organic matter at the cellular level."
"How long?"
"Seventy-two hours for a complete cycle." His voice cracks. "But the lockdown means no air circulation. We'd suffocate in six."
The pounding intensifies. Cass sees the door buckle slightly, metal warping under pressure.
"There's an override." Eli pushes himself upright, swaying. "Emergency ventilation system. Keeps the air flowing during sterilization so the gas can circulate."
"Where?" Finn's already moving toward the control panel.
"You can't access it from here." Eli's eyes meet Cass's. "The code is on me."
She understands before he says it. The way his hand moves to his chest, fingers tracing something beneath his shirt. "No."
"It's tattooed. Right over my heart." His voice is steady now, clearer than it's been since they found him. "You have to cut it out."
"Fuck that." Cass's hand tightens on her knife. "We'll find another way."
"There is no other way." Eli takes a step toward her. "The entities will break through that door in minutes. The gas is our only chance."
"Not if it means—"
"I'm already dead." The words are flat, final. "Have been for months. What you're looking at is just the fungus wearing my face."
Finn's tablet screen illuminates the control panel. "The sterilization system requires a twelve-digit alphanumeric code. Without it, we can't activate the override."
The door buckles again. This time, Cass sees fingers—too many fingers—curl around the edge of the frame. They're pale, covered in the same luminescent threads that mark Eli's skin.
"How long have you known?" She doesn't look at her brother. "About the tattoo."
"Since they put it there. Three weeks after they brought me down here." Eli's breathing is labored. "They wanted insurance. A way to purge the chamber if the infection spread too fast."
"And they put it on you."
"They put it in me." His hand pulls his shirt aside, revealing the growth on his chest. The fungal mass has spread across his ribs, pulsing with each heartbeat. "The code is underneath. Embedded in the tissue."
Cass's stomach turns. "You're saying I have to—"
"Cut through the infection to reach the skin. Yes." Eli's eyes are steady. "It's going to hurt. The mycelium has nerve endings now. It'll feel like you're cutting into living flesh."
"Because I will be."
"Because you have to."
The door shrieks as it tears partially free from its hinges. Through the gap, Cass sees movement—bodies that were human once, now twisted and overgrown with fungal blooms. Their eyes glow in the darkness.
Finn grabs her arm. "We can't do this. There has to be another option."
"Name it." Cass pulls free, moving toward Eli.
"The ventilation system. If we can manually override the lockdown—"
"The lockdown is facility-wide. Controlled from Central Command." Eli's voice cuts through Finn's panic. "You'd need Councilor clearance to lift it."
"Then we get to Central Command."
"Through three levels of infected corridors?" Eli shakes his head. "You wouldn't make it past the first junction."
A hand—gray, fingers elongated and tipped with fungal growths—reaches through the gap in the door. It gropes blindly, searching.
Cass draws her knife. The blade is eight inches of carbon steel, honed sharp enough to split hair. She's used it to gut fish, strip wire, pry open locked containers. Never to cut into her brother's chest.
"Tell me exactly where." Her voice doesn't shake.
Eli pulls his shirt over his head. The fungal growth covers most of his torso now, a landscape of pale ridges and valleys that pulse with bioluminescent light. In the center, just left of his sternum, she sees it—a patch of skin still relatively clear, marked with dark lines beneath the surface.
"Here." He touches the spot. "The code runs vertical. Twelve characters. You'll need to cut deep enough to see the ink, but not so deep you hit bone."
"How deep is that?"
"Quarter inch. Maybe less." His hand finds hers, guides the knife to the right position. "Start at the top. Work your way down. Don't stop until you can read all twelve characters."
The door tears free completely. It crashes to the floor, and the entities pour through—three of them, bodies bent at wrong angles, moving with jerky coordination. Their mouths hang open, and Cass sees fungal threads where their tongues should be.
Finn scrambles backward, his tablet clattering to the floor. "Cass—"
"Get to the control panel." She doesn't take her eyes off Eli. "Be ready to input the code."
"I can't—"
"Move."
He moves. The entities advance slowly, their heads tilting in unison as they track the three humans in the chamber. The breathing sound comes from all of them at once, a chorus of wet rattles.
Eli's hand closes over Cass's wrist. "They won't attack while I'm here. The source wants me intact."
"Why?"
"Because I'm the oldest infection. The most integrated." His grip tightens. "I'm valuable."
"Then we use that." Cass's mind races. "We bargain—"
"There's no bargaining with a hive mind." Eli's eyes bore into hers. "It doesn't negotiate. It consumes."
The entities stop ten feet away, forming a semicircle. Their eyes glow brighter, and Cass realizes they're waiting. Watching.
"Do it now." Eli's voice is urgent. "Before they realize what we're planning."
Cass presses the blade against his chest. The fungal growth is warm, almost hot, and it pulses against the steel. "This is going to—"
"I know." His hand releases her wrist. "I've been in pain for months. This is just more of the same."
She cuts. The blade parts the fungal tissue easily, too easily, like cutting through overripe fruit. Dark fluid wells up, not quite blood, smelling of earth and decay. Eli's jaw clenches, but he doesn't make a sound.
The entities react immediately. Their heads snap toward Eli, and the breathing sound becomes a hiss. They surge forward.
"Faster." Eli's voice is strained. "They know."
Cass cuts deeper, following the line she can barely see beneath the growth. The fungal tissue splits, revealing muscle and fascia underneath. More fluid spills across Eli's chest, running down his ribs. She sees the first character—a number seven, stark black against pale skin.
The entities are five feet away. Four. Their hands reach out, fingers twitching.
"Keep going." Eli's hand finds the wall, bracing himself. "Don't stop."
She cuts through the next section. The blade scrapes against something hard—not bone, but calcified fungal matter that's grown into the muscle tissue. She has to saw through it, and Eli finally makes a sound—a low groan that turns into a cough. Blood flecks his lips.
Two more characters visible. A letter K. A number three.
The entities are close enough to touch now. One reaches for Cass's shoulder, and Eli's hand shoots out, grabbing its wrist. The entity freezes, its head tilting as if listening to something only it can hear.
"They're asking the source what to do." Eli's voice is thick. "It's confused. I'm part of the network, but I'm helping you. It doesn't understand."
"How long?"
"Seconds. Maybe less." His grip on the entity's wrist tightens. "Finish it."
Cass cuts faster, abandoning precision for speed. The blade slices through tissue, and she sees more characters emerging—numbers and letters in a sequence that makes no sense to her. Eight characters visible now. Nine.
The entity Eli's holding begins to struggle. The other two move closer, their hands reaching for Cass's arms, her throat.
"Finn!" She doesn't look away from her work. "You getting this?"
"I can't see from here—"
"Then get closer."
He appears at her elbow, tablet raised, camera focused on Eli's chest. His hands shake so badly the image blurs.
"Hold still." Cass's blade finds the last section of growth. She cuts through it in one stroke, and the final three characters appear—a letter M, a number nine, another letter M.
"Got it." Finn's already running toward the control panel.
The entity breaks free from Eli's grip. All three surge forward at once, and Eli throws himself between them and Cass. His body hits the nearest one, and they go down together in a tangle of limbs and fungal growth.
"Go!" Eli's voice is muffled, desperate. "Activate it now!"
Cass runs. Behind her, she hears the wet sound of tearing flesh, Eli's scream cut short. She reaches the control panel as Finn's fingers fly across the interface, inputting the code.
"It's asking for confirmation." His voice cracks. "Sterilization will kill everything in the chamber."
"Do it."
"Eli—"
"Is already dead." The words taste like ash. "He said so himself."
Finn's finger hovers over the confirmation button. On the floor, Eli struggles beneath the entities, their hands tearing at his chest, pulling at the wound Cass made. He looks up, meets her eyes one last time.
His lips move. She can't hear the words, but she reads them: Thank you.
Finn presses the button.
Nothing happens for three seconds. Then the vents in the ceiling hiss open, and yellow gas begins to pour into the chamber. It's thick, viscous, rolling across the floor like fog. The entities release Eli and turn toward the vents, their heads tilting in unison.
Eli crawls toward Cass, leaving a trail of dark fluid. His chest is a ruin, the fungal growth torn open, ribs visible beneath. "The code isn't the only thing I need you to take."
She drops to her knees beside him. "What are you talking about?"
"There's something growing in my lung." His hand presses against his side, just below his ribs. "Left side. The Council doesn't know about it."
"Eli—"
"It's a spore mass. Concentrated. Dormant." His breathing is ragged, each word an effort. "The source has been growing it inside me for weeks. A seed."
The gas reaches the entities. Their skin begins to blister, fungal growth withering and turning black. They don't scream. They just stand there, bodies dissolving slowly from the outside in.
"Why would I—"
"Because it's the source's genetic blueprint. Everything it knows, everything it's learned." Eli's hand finds hers, guides it to his side. "If you can get it to someone who understands mycology, they can study it. Find a weakness."
"The gas will destroy it."
"Not if you take it now." His eyes are dimming, the glow fading. "Cut here. Reach between the ribs. You'll feel it—hard, about the size of a walnut."
The gas is three feet away. Two. Cass can smell it now—chlorine and something sharper, chemical.
"I can't—"
"You have to." Eli's grip tightens. "This is why they kept me alive. Why they fed me, monitored me. They were waiting for this to mature."
"Then let it die with you."
"And waste the only advantage we have?" His laugh is wet, broken. "That's surface thinking, Cass."
The words hit her like a fist. She looks at her brother—what's left of him—and sees the kid who taught her to survive, who never gave up even when giving up was the smart choice.
She presses the blade against his side.
The chamber door begins to unseal.