21. Cassia #2
"Civilians are secure," Junia murmurs beside me, wiping tunnel grime from her cheek. "The ventilation loop from the secondary market will keep this chamber breathable for half a day—plenty of time for Nysera's shuttles. If we're hunting the core, we go now."
I pull my med-pack tighter against my shoulder and point my flashlight toward a tarnished conduit branching south from the chamber, a narrow overflow pipe that slopes sharply downward into absolute darkness.
"The thermal readings Elias mapped from the signal array show a massive heat concentration about a few miles beneath us, directly under the old district foundation layer. That's where the network converges."
Junia tucks her data-pad into her vest and draws her sidearm, eyeing the pipe with the resigned determination of someone who has crawled through worse and lived to complain about it. "Lead the way, Cass. I'll keep my screaming to a minimum."
We leave the shelter behind.
The overflow pipe narrows as we descend, the ceiling dropping until I'm hunching and Junia is practically crawling.
The air changes—gone is the damp, mineral-heavy atmosphere of the drainage network.
A sharper toxic odor has taken over. Comprised of ozone and synthetic coolant that form a chemical cocktail coating the root of my throat and making my eyes water.
The stone walls disappear in a creeping web of black synthetic cables that pulse with faint violet light, threading through the ancient masonry like veins colonizing dead tissue.
My flashlight catches an object ahead, and I stop so abruptly that Junia collides with my shoulder.
"Cass, what?—"
"Don't look down."
Looking down, she immediately stops talking.
A vast, dilapidated maintenance vault opens around me, converted into an abomination that makes the fused droid nests from Sector Nine’s tunnels look like amateur hour.
Machines fill the space, but they are unnervingly woven together with organic tissue, where human and Kraaj bodies fuse into the mechanical lattice, with limbs incorporated into the wiring and torsos serving as structural supports for relay nodes that pulse with that same sickly violet light.
The flesh has been preserved through some process beyond anything in my medical training—suspended in a state between death and material, with skin taut over bone and threaded with synthetic filaments that glow underneath the surface.
I count seven, maybe more. The light makes it difficult to distinguish where the machines end and the corpses begin, and my medical training registers the anatomy with a precision that fights against the revulsion climbing my throat.
These bodies were integrated intentionally.
They were harvested and used as raw material by an intelligence that views organic matter as another resource to process.
"Those are the missing scavenger crews," Junia whispers, barely audible. "Fen's team and the Vasari brothers. They went into the deep tunnels months ago and nobody ever—" She swallows hard. "Nobody found them."
"Someone did." I force my flashlight forward, sweeping the chamber.
More nests branch from the central mass, corridors of fused machinery and preserved tissue extending into the surrounding tunnels like roots spreading from a central trunk.
The relay nodes pulse in sequence, a cascading pattern that travels outward from the deepest point of the chamber toward the surface infrastructure above.
A holographic projector at the midsection of the nearest nest flickers to life.
The image flickers, patchy and stuttering, cycling through colors outside standard display spectrums. A shape assembles itself from the static, manifesting as a vaguely humanoid, faceless entity built from cascading lines of code that rearrange themselves faster than my eyes can track.
The projection fills the chamber with cold blue-white light that strips the shadows from the fused bodies and threaded limbs, highlighting faces frozen in a final, silent scream that sears itself into my memory.
"Cassia Ward." The voice emerges uniformly synthetic and devoid of inflection—a hollow, echoing signal broadcasting from the dark.
In the terrifying absence of a face or name, my brain immediately dubs it the Hollow Signal.
It pronounces my name with a precision that tells me this thing has studied how it sounds in someone else's mouth.
"Human medic from District Seventeen. Bonded to Commander Rhykor of the Luvon-born Kraaj territorial division. "
My pulse pistol is up, aiming before the last syllable solidifies. Junia levels the sidearm, her white-knuckled grip steadying the barrel until the projector sits squarely in her sights.
"Your biological signature has been cataloged since your initial contact with the evolved Kraaj commander," the hologram continues, the faceless shape tilting as if studying me. "You and your bond are required to stay for further testing. The Kraaj commander will come for you. He always comes."
"Juno," I keep my pistol on the projector. "Tell me you're recording this."
"Every word." Her data-pad glows against her hip where she activates the passive recording function. "Every horrifying, nightmare-fuel word. Can we leave now?"
The chamber shudders.
A tectonic grinding starts deep in the bedrock, traveling upward through the architecture until the relay nodes flare bright enough to blind me.
I watch as the fused machine nests lurch to life, their limbs extending and cables tightening in unison.
When those mechanical components activate, the bodies trapped in the lattice twitch and contort, pulled into new, horrific configurations with a wet, grinding sound that will echo in my nightmares forever.
"Run!" I shove Junia toward the overflow pipe. "Go—go now?—"