The Third Bell chimed, a deep, resonant note that seemed to hang in the air long after the sound faded. In its wake, the Tower settled into its closest approximation of sleep—a low, mechanical sigh, the slowing of unseen gears, the dimming of lights in distant corridors. I lay perfectly still on my bed, counting the seconds in the dark.

  One… two… three…

  Tavin’s count, not mine. A ghost rhythm in my head.

  …four… five… six…

  When I reached three hundred, I moved.

  The corridor outside my room was a tunnel of pale, sleeping light. The ivory walls held a faint, bioluminescent glow, like the belly of some deep-sea creature. It was empty, but the emptiness felt watchful. The air was perfectly still, yet it carried a vibration—the Tower’s endless, subterranean hum. I moved like a shadow against the curved wall, my senses scraping against every surface, every sound. My own breathing was too loud.

  The knife on my calf was no longer just warm.

  It was a live coal. A second heart beating against my skin, its rhythm a slow, deep thump-thump that countered the Tower’s higher-frequency whine. And it pulled. Not with the gentle insistence of before, but with a dogged, magnetic tug, a line hooked behind my navel drawing me forward. It led me past the empty Common Room, past the sealed doors of the infirmary, to a stretch of wall I’d passed a hundred times without seeing.

  A service door. It was set flush with the seamless ivory, visible only as the faintest hairline rectangle. No handle. No rune I could see. Just a subtle difference in the texture of the light, as if the wall here was slightly thinner, slightly more tired.

  I pressed my palm against it. The ivory was cold, unnervingly smooth.

  For three heartbeats, nothing.

  On the fourth, the door shivered. Not a mechanical slide, but an organic, almost nauseating ripple, as if the wall were a membrane recoiling from a touch. It peeled back, not into a hallway, but into a mouth of darkness. A cold, damp breath exhaled from the opening, carrying a scent that made my throat tighten—wet stone, yes, and ozone, but underneath, the cloying sweetness of decay and the sharp, metallic tang of old blood.

  The knife’s heat spiked. Here.

  I stepped into the throat of the Tower.

  The change was immediate and absolute. The moment the membrane-door sealed shut behind me with a soft, wet click, the world changed.

  The polished ivory was gone. The air, once dry and filtered, was now a thick, frigid soup. I stood on a narrow landing of rough, black basalt, slick with condensation. A stairwell plunged downward, carved not with precision, but hacked from the living rock, its steps uneven and worn into shallow bowls by centuries of use—or erosion. No gentle spiral here. This was a vertical shaft, a wound.

  Light did not come from above. It bled from the walls themselves. Veins of luminescent matter pulsed within the rock—sickly purple, bruised yellow, a poisonous, pulsating green. They throbbed slowly, rhythmically, like exposed ganglia. Their light did not illuminate; it stained, casting long, wavering shadows that seemed to move independently of me.

  And the sound. The Tower’s steady hum was gone, replaced by a deep, sub-auditory thrum that I felt in my teeth, in the marrow of my bones. It was the sound of immense pressure, of unimaginable weight bearing down from above. Woven through it were other sounds: a distant, erratic dripping, the skitter of something small and many-legged over stone, and a low, continuous moan that might have been wind through deep fissures or something else giving voice to a perpetual ache.

  The whispers in my chest, usually a distant council, erupted.

  They did not speak in words. They reacted. A chorus of terror, of recognition, of hungry, desperate welcome. Sensations crashed over me: the gut-clench of freefall, the suffocating pressure of deep water, the electric prickle of imminent lightning. I gripped the damp, coarse rock of the wall to steady myself. The stone was not inert. It vibrated with a faint, feverish warmth.

  The knife was a brand now. The pull was undeniable, a lodestone dragging me down into the gut of the earth.

  I began the descent.

  The stairs went on forever. Time lost meaning, measured only in the burning protest of my thighs and the accelerating drum of my heart. The air grew denser, harder to pull into my lungs. It wasn’t just cold; it was heavy, saturated with a psychic moisture that beaded on my skin and seeped into my thoughts.

  The walls began to change. The rough basalt gave way to stranger materials. Sections of slick, obsidian-like stone that reflected the throbbing light in distorted, funhouse mirrors. Patches of a fibrous, porous substance that glistened wetly and breathed, contracting and expanding slowly. I saw shapes in the rock—faces frozen in torment, grasping hands, the outlines of bodies pressed against the stone as if trying to escape. Trick of the light. Had to be.

  But the whispers knew them. …tried to climb… too late… part of the wall now…

  The psychic pressure increased. It was no longer just background noise. It was a storm. Fragments of thought, sharp as glass, whipped through my mind:

  A child’s laughter, cut short by a sound of tearing.

  The taste of copper and despair.

  The crushing loneliness of a century of darkness.

  White-hot rage, directionless and eternal.

  I pressed the heels of my hands against my temples, trying to hold my self together. I was a sieve, and the memories of the damned were pouring through.

  Down.

  I passed archways leading off into deeper blackness, from which even stranger smells wafted—ozone and burnt hair, rotting roses, the clean, sterile scent of an empty hospital room that somehow felt more terrifying than the decay. Muffled sounds echoed from those tunnels: a rhythmic, metallic scraping; a wet, bubbling sigh; something that might have been a melody played on instruments of broken glass.

  This was not a place. It was an organism. A diseased one. The Severance Tower wasn’t just built on bedrock; it was grafted onto something older, something sick, and these were its infected passages.

  Finally, the stairs ended.

  They didn’t open onto a floor. They emptied onto a narrow, rusted iron gantry, bolted crudely to a cavern wall that stretched up and down into absolute blackness. I had arrived in a void.

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  I crept to the gantry’s edge and looked down.

  The sight stole the air from my lungs, the thoughts from my head.

  I was perched on the inside of a colossal, cylindrical shaft, so wide its opposite side was lost in a haze of stagnant mist and throbbing, colored light. It plunged down into an abyss that had no bottom, and soared up to a ceiling I could not see. And the walls of this impossible well…

  They were honeycombed.

  Thousands upon thousands of cells, carved into the raw rock or built from stained metal and glowing crystal, stacked and staggered in a nightmare of geometry. A vast, vertical prison. The scale was not architectural; it was geological. This wasn’t a level of the Tower. This was the Tower’s root, its true foundation.

  The light came from the cells themselves. Some glowed with the steady, sterile white of containment fields. Others pulsed with the violent, chaotic colors of the Taint—violet, emerald, a sickly orange. Some were dark, but a darkness that seethed and moved. And from this colossal apiary of suffering rose a sound.

  It was not a chorus of screams. It was worse.

  It was a symphony of madness.

  A low, droning hum that vibrated the gantry beneath my feet. Screeches of feedback that spiked and faded. Snatches of sobbing, laughter, and furious, guttural chanting in languages that hurt my mind. Whispers that merged into a river of white noise, a psychic static that pressed against my every thought. And underneath it all, the deep, tectonic groaning of the mountain itself, stressed to its breaking point.

  I gripped the icy railing, my knuckles white. The sheer, overwhelming wrongness of the place was a physical force. This wasn’t containment. This was a museum of atrocity. A garden where human souls were planted and twisted into grotesque new shapes.

  The knife was a fire in its sheath. Its pull was a taut wire, angling down and to the left, along a network of gantries that spider-webbed across the chasm wall.

  I had to move. The awe and terror were paralyzing, but the memory of Tavin’s trembling hands, of his silent count, was a sharper goad. I forced my legs to carry me onto the web of walkways.

  The gantries were ancient, rust flaking under my touch. They swayed slightly with my movement, creaking protests that were swallowed by the cavern’s din. I passed cells, and I could not help but look.

  In one, a figure floated in a tank of amber fluid, their body covered in iridescent, fungal growths that bloomed and died in slow motion.

  In another, a Hollow had become a part of a complex, crystalline machine, their limbs replaced with glowing rods, their head encased in a helm of wiring, their mouth open in a silent, endless data stream.

  A cell crackled with arcing electricity, and within the storm, a silhouette danced a spastic, jerking ballet.

  One held only a swirling vortex of black sand, in the center of which two points of blue light flickered like dying stars.

  They were not mindless. Awareness shone from many of them—a terrible, trapped sentience. Eyes tracked my progress. A hand, elongated and boneless, pressed against a crystal barrier as I passed. A thought, clear and cold as ice water, slipped into my mind: Turn back. You are only adding yourself to the collection.

  The psychic pressure was a rising tide. I felt layers of anguish settling on me like sedimentary rock—the fresh, sharp pain of recent arrivals over the numb, billion-year despair of the ancient ones. My own internal Taint churned in response, a wild, eager thing. The warmth in my chest was no longer comforting. It was a vigil light burning in a charnel house.

  Then I saw the newer section.

  The gantry led to a platform where the architecture shifted to clean, harsh lines. Here were rows of identical, rectangular cells made of a smooth, grey composite material. Observation windows of thick glass. Control panels with soft, blinking lights. This was the Wardens’ work. Modern. Efficient.

  And in the third cell, I saw him.

  Tavin.

  He was curled on the floor, his back to me. He wore a plain white smock. His familiar sandy hair was a dull mat. He was shuddering, a constant, palsy-like tremor. Even from here, I could see the dark, web-like veins standing out against the pale skin of his neck. His right hand tapped against the floor in a frantic, broken rhythm.

  One… two… thr— The rhythm stuttered, reset. One… two…

  The knife was a sun against my leg. The pull was so strong it felt like it would tear the muscle from the bone.

  A heavy, sealed door with a keycard terminal stood between me and the row of cells. A dead end. I was exposed on the gantry, with no way forward.

  As I stood there, desperation turning to ashes in my mouth, a bank of monitors on the wall beside the door flickered to life. They showed various angles of the cavern—empty gantries, pulsing cells. Security feeds.

  On the center screen, the view was from inside a cell. It showed Tavin’s shuddering form from the front. His head was lifted now, his eyes open.

  They were voids. Pools of ink in which distant violet galaxies swirled and died. But as I watched, the screen seemed to… focus. The swirling slowed. The darkness receded, just at the edges. And in that tiny ring of reclaimed brown, I saw a consciousness fighting its way to the surface.

  His lips moved on the monitor.

  No sound came from the speakers. But in my head, a voice, thin and frayed as old thread, formed a single, clear thought.

  Kieran?

  I stumbled to the monitor, placing my hand against the cold screen. “I’m here.”

  You… fool. The thought was laced with a terrible fondness. This is… the viewing room. They see everything.

  I looked around. The platform was empty. The cavern hummed. But he was right. This sterile, modern section wasn’t a hiding place. It was a display case.

  Go. Now. Before they come for the show.

  “The knife,” I sent the thought back, pouring all my will into it. I drew the blade. In the gloom of the Deep, its iridescent metal blazed, casting dancing, beautiful light on the grim walls. “It can help. It took the pressure before. Let me try.”

  On the screen, Tavin’s face contorted. A tear, black and viscous, tracked down his cheek. The pressure… is all that’s holding me together. Take it… and I spill. What’s left of me… and all of them. Every voice I ever swallowed. He convulsed, his back arching. A wisp of darkness, thick as oil, leaked from his lips and hung in the air of his cell, forming a shifting, screaming knot of faces. See? No jar. A sieve.

  The truth of it was a cold knife in my own gut. He wasn’t a prisoner who could be freed. He was a crime scene, still unfolding.

  A deep, resonant clunk echoed through the cavern, a sound of immense gears engaging. I spun.

  From a shadowed archway I hadn’t seen, three figures emerged onto the platform. They were Wardens, but unlike any I’d seen. Their uniforms were matte black, absorbing the sickly light. Their faces were covered by smooth, featureless helmets of the same material, reflecting nothing. No eyes, no vents. Just polished obsidian. They moved in unison, silently, their steps making no sound on the metal grate. They were less like guards and more like extensions of the darkness itself.

  They didn’t look at me. The lead one walked to Tavin’s cell, observing the swirling knot of black vapor with a slight tilt of its helmet. It pressed a sequence on the control panel. A high-pitched whine filled the air, and the vapor was violently sucked back into Tavin’s body. He went limp.

  “Subject 2146. Manifestation contained. Log incident. Continue sedation protocol.” The voice from the helmet was flat, synthesized, devoid of anything alive.

  Then, as one, the three blank faces turned toward me.

  “Hollow 2147. Unauthorized descent. Breach of Restricted Deep Archives. You will be detained.”

  The door behind me was sealed. The gantry was a ledge over a mile-deep drop. There was nowhere to go.

  As two of them moved toward me, the third watching dispassionately, a sound cut through the synthesized hum and the distant madness.

  A voice.

  Not from a speaker. Not in my mind. A real, physical voice, worn paper-thin by time, yet carrying a weight of authority that silenced the very air around it.

  “Let the boy pass.”

  It came from the deepest, darkest part of the shaft, from a place where the gantries did not go, where the rock wall was smooth and featureless save for a single, vast, circular seal. The seal was made of a metal that was neither silver nor black, and etched into its surface was a rune so complex it made my eyes water to look at it. It did not glow. It absorbed light, creating a pool of perfect void.

  The lead Warden’s helmet swiveled toward the voice. A pause. “The Ancient is not to be disturbed.”

  “I am perpetually disturbed,” the voice replied, a dry, crackling sound like a glacier shifting. “By the tedium. By the stench of your fear. And today, by the familiar resonance. Send him.”

  Another pause. The lead Warden seemed to communicate with something unseen. Then, a single, sharp nod. “Five minutes. Threshold protocol. You will not cross the ward.”

  The black Wardens did not touch me. They simply stepped aside, creating a path that led to the very edge of the platform, where a single, narrow bridge of black iron extended into the darkness, pointing toward the immense, light-eating seal.

  The knife on my calf, which had fallen silent, gave one final, definitive pull.

  Toward the voice.

  Toward the seal.

  Toward the thing that knew my father’s name, and my mother’s.

  With the eyes of the faceless Wardens and ten thousand broken souls upon me, I stepped onto the bridge, and walked toward my grandfather.