The utility corridor beneath Saint Mercy Hospital was too narrow for panic.
That was the only reason Sera Vale still had control of her group.
Barely.
The passage ran behind the pharmacy wing like the spine of some buried machine—low concrete ceiling, sweating pipes, maintenance bulbs flickering every few yards. The air smelled of rust, bleach, damp insulation, and something fouler underneath it all: hot blood and opened tissue drifting in through vents from the floors above.
Sera moved first, pistol up, trauma knife low at her side.
Behind her came the maintenance worker, then the intern, then the pediatric nurse clutching the emergency meds so hard her knuckles had gone white.
Nobody spoke louder than a whisper now.
Not after the sounds they'd left behind.
Not after Ben.
Ahead, the corridor forked.
Left led toward laundry and morgue access.
Right toward imaging, generator control, and an old surgical supply lift.
Sera slowed just enough to listen.
At first, all she caught was the building dying around them—distant alarms, water hammer in the pipes, a burst of gunfire somewhere above. Then something else reached her through the concrete.
Voices.
Not screaming.
Commands.
Disciplined. Short. Armed.
She turned her head slightly. "You hear that?"
The maintenance worker nodded, terrified. "That ain't hospital security."
No. It wasn't.
Security panicked.
These men sounded like they belonged here.
Sera motioned them right.
They moved fast, shoes splashing through a shallow ribbon of dirty water that had begun creeping along the floor from somewhere farther down the line. The intern's flashlight shook so badly the beam kept jittering over exposed valves and warning placards. Twice, they passed smeared handprints on the wall. Once, they stepped around a maintenance cart overturned beside a service panel, one wheel still spinning slowly like someone had shoved it only seconds earlier.
Then they found the first body.
A man in black tactical armor lay half inside an open junction room, one arm twisted beneath him, sealed respirator shattered. He'd been killed brutally. Not torn apart like the infected usually left people.
Opened.
His chest plate had been peeled away like a can lid, and beneath it his rib cage looked split from the inside.
The intern made a choking sound.
Sera grabbed the flashlight from her before she dropped it and crouched beside the corpse. No hospital insignia. No police patches. Matte gear. Suppressed rifle. Utility knife. Blue-lit scanner unit clipped to the vest.
Private.
Organized.
Wrong.
The pediatric nurse whispered, "Who are they?"
Sera didn't answer because she didn't have one that would help.
She reached toward the dead man's rifle—
And every light in the corridor went out.
Darkness swallowed them whole.
The nurse gasped. The intern started crying immediately, small and breathless. Somewhere close by, metal groaned through the walls as the building shifted under failing power.
Then the emergency system kicked in.
Not white.
Red.
A dim crimson wash spilled down the corridor, turning the wet floor black and every pipe overhead into a vein.
And in that red light, Sera saw movement at the far end of the passage.
Not a Fresh.
Not a Drag.
Too big.
It unfolded from the shadows beside the supply lift with a slow, deliberate motion, as if it had been crouched there listening the whole time. The thing still carried pieces of a human frame—arms, shoulders, a head shape where the neck should have been—but everything else had swollen and warped into layered muscle and exposed tendon. One arm ended in a hooked mass of bone and split fingers fused into a blade-like curve. Its mouth hung open too wide, the lower jaw distended into a dripping hinge.
But the worst part wasn't the body.
It was the way it looked at them.
Focused.
Choosing.
The intern screamed.
The creature moved.
It hit the maintenance worker first, crossing half the corridor in a blur of flesh and shadow. He slammed into the wall so hard a pipe burst above him, spraying the passage with boiling water. Sera fired twice. One round tore through the creature's shoulder. The other vanished into its chest with almost no effect.
"Run!" she shouted.
The nurse stumbled backward. The intern slipped in the water and went down hard. Sera lunged, grabbed the girl by the back of her coat, and hauled her upright just as the creature tore the maintenance worker off the floor. He got one sound out—a chopped-off scream—before the hooked arm punched through him and pinned him to the concrete.
Sera dragged the others left into the surgical supply branch.
The corridor narrowed even further, shelves lining both sides with old sterile packs and rusting metal trays. Behind them, the thing hit the junction wall once, twice, then smashed through into pursuit. The impact shook dust from the ceiling.
Sera shoved the nurse ahead. "Move!"
Gunfire cracked suddenly from the main passage.
Controlled bursts. Multiple shooters.
The creature shrieked—an awful, splitting sound—and the shelf beside Sera exploded under stray rounds. Whoever was shooting out there had eyes on the thing now.
Or maybe on everyone.
The intern sobbed, "What do we do?"
Sera's face hardened. There was only one answer left.
"We keep moving," she said. "And we do not let that thing corner us."
Behind them, the mutant howled again.
Ahead, through the red haze and collapsing hospital dark, another set of footsteps was getting closer from the opposite direction.