Chapter 3

The fluorescent lights of the security office buzzed like a swarm of angry bees, casting a cold, sterile glow over the bank of monitors. Marcus Reed hunched over the desk, his eyes bloodshot and gritty from too many sleepless nights. The clock on the wall ticked past 2:45 AM, and his pulse quickened. Floor 7—or whatever it was—would come alive soon. He could feel it, a creeping certainty that gnawed at his nerves.

He hadn’t told anyone about the heat signatures since his conversation with Janet in HR last week. Her pinched face and clipped tone still echoed in his mind: *“There is no Floor 7, Marcus. Never has been. Check the blueprints if you don’t believe me.”* He had checked them, of course, late at night when the building was a tomb of silence. The blueprints showed only six floors, just as she’d said. But the thermal imaging camera didn’t lie. Every night at 3:00 AM, faint red-orange blips flared to life on the screen, clustering in a space above Floor 6 that shouldn’t exist.

Marcus rubbed his stubbled jaw, glancing at the empty coffee mug beside him. He’d been at GenTech BioLabs for three months now, a gig he’d taken to pay off his ex-wife’s alimony and keep a roof over his head. Night shifts suited him—less people, less noise. But this mystery was unraveling him, thread by thread. He couldn’t shake the feeling that he was being watched, even here in the locked security office.

The radio on his belt crackled, startling him. “Marcus, you there?” It was Lila, the other night guard, stationed at the east entrance. Her voice was a welcome tether to reality, warm and rough around the edges from years of smoking.

“Yeah, I’m here,” he replied, thumbing the button. “What’s up?”

“Got a weird vibe over here. Thought I heard something outside, like footsteps. Checked the cameras, though—nothing. You seeing anything funky on your end?”

Marcus hesitated, his gaze flicking to the thermal monitor. The screen was still dark, no signatures yet. “All quiet for now. I’ll keep an eye out. You good?”

Lila chuckled, a low, throaty sound. “Always am. Just don’t like being spooked at ass-o’clock in the morning. Holler if you need me.”

“Will do.” He released the button, a faint smile tugging at his lips. Lila was the only person in this place he trusted, the only one who didn’t look at him like he was a washed-up nobody. They’d bonded over late-night vending machine runs and shared stories of messy divorces. She was a decade older, with a sharp wit and a no-nonsense attitude that made her feel like family. If he was going to tell anyone about Floor 7, it would be her. But not yet—not until he had proof.

The clock hit 2:58 AM. Marcus leaned forward, his breath shallow. The thermal monitor flickered, and there they were: three distinct heat signatures blooming in the void above Floor 6. They moved slowly, almost purposefully, clustering near what he’d calculated to be the northeast corner of the phantom floor. His stomach churned. What the hell were they doing up there? And who—or what—was generating that heat?

He grabbed his flashlight and security badge, a reckless idea forming. The elevators didn’t go past Floor 6, and the stairwells were locked beyond that point. But there was a maintenance hatch on the sixth floor, a narrow access point for HVAC repairs. He’d seen it during his rounds, a rusted grate that looked like it hadn’t been touched in years. If there was a way to Floor 7, that had to be it.

The building was eerily quiet as he stepped out of the office, his boots echoing on the polished tile. GenTech’s corridors were a labyrinth of glass and steel, designed to impress investors rather than comfort employees. At night, the place felt like a mausoleum, every shadow a threat. Marcus kept his flashlight low, sweeping it across the hallway as he made his way to the elevator.

Floor 6 smelled of disinfectant and old coffee, the air heavy with the hum of machinery behind the walls. He found the maintenance hatch near the back of the floor, tucked behind a row of locked storage rooms. The grate was secured with a padlock, but the metal was so corroded it might as well have been paper. Marcus hesitated, glancing over his shoulder. The cameras didn’t cover this corner—he’d checked. Still, the weight of being caught pressed down on him.

He pulled a small multi-tool from his belt and worked at the lock. It gave with a rusty snap, the sound louder than he’d expected. Wincing, he eased the grate open, revealing a narrow shaft barely wide enough for his shoulders. Cold air rushed out, carrying the faint, metallic tang of something he couldn’t place. His flashlight beam danced over the rungs of a ladder bolted to the wall, disappearing into darkness above.

“This is stupid,” he muttered under his breath, but his curiosity—his need to know—propelled him forward. He wedged himself into the shaft, the metal groaning under his weight as he climbed. The ladder was slick with condensation, and his hands trembled with every rung. Ten feet up, the shaft opened into a cramped crawlspace, the air thick and oppressive. His flashlight caught glimpses of exposed wiring and ductwork, but no sign of a floor beyond.

Then he heard it—a low, rhythmic hum, like a heartbeat pulsing through the walls. It wasn’t machinery; it was too organic, too alive. His skin prickled as he crawled toward the sound, the hum growing louder until it vibrated in his chest. At the end of the crawlspace, he found a panel, loose on its hinges. Beyond it was darkness, but the hum was unmistakable now, emanating from whatever lay on the other side.

Marcus’s fingers hovered over the panel. Every instinct screamed at him to turn back, to pretend he’d never seen the heat signatures, to let Floor 7 remain a ghost story. But he’d come too far. With a shaky breath, he pushed the panel aside.

The space beyond was vast and shadowed, a cavernous room that shouldn’t exist. His flashlight beam trembled as it swept over rows of glass tanks, each filled with a viscous, glowing liquid. Shapes floated within—indistinct, but unmistakably human in form. Limbs, torsos, faces with closed eyes. The hum pulsed from machines lining the walls, their screens flickering with data he couldn’t comprehend.

His stomach lurched, bile rising in his throat. This wasn’t a storage floor or a forgotten lab. This was something else, something wrong. He stumbled back, his flashlight clattering to the floor. The beam spun wildly, illuminating a figure at the far end of the room—a silhouette, tall and unnaturally still, watching him.

“Who’s there?” Marcus choked out, his voice barely a whisper. The figure didn’t move, didn’t speak. But in the half-light, he saw its eyes glint, cold and predatory, like a beast sizing up prey.

Panic seized him. He scrambled back toward the crawlspace, his hands scraping against the metal. The hum followed him, a relentless drone that burrowed into his skull. He didn’t look back, couldn’t bear to see if the figure pursued. As he dropped down the ladder, his radio crackled to life, Lila’s voice cutting through the fog of terror.

“Marcus, where the hell are you? I’ve got movement on the east cameras—someone’s in the building. Get back to the office, now!”

His heart slammed against his ribs. Someone in the building. Someone—or something—from Floor 7. He gripped the radio, his voice hoarse. “I’m coming. Lock the doors, Lila. Don’t let anything in.”

As he sprinted toward the elevator, the hum lingered in his ears, a sinister promise that whatever he’d uncovered wasn’t done with him yet.