The fifth floor corridor was darker than the others.
Not from lack of light — the same pale morning filtered through the windows here as everywhere else. It was darker the way a room felt darker when something large was breathing in it. The green-white pulse came from the far end of the hall, where the corridor opened into what had once been a common lounge.
Twelve shapes moved in slow orbits around something at the center of the room. Not patrolling. Orbiting — the way moons orbited something with actual gravity.
Lucian fired Perception Pulse one more time as they stepped through the door, and this time the dense signal at the center resolved into something almost shaped — tall, hunched, limbs too long for the body they were attached to, pulsing that sick green light from somewhere inside its chest like a second, wrong heart.
"On my signal," he said, voice barely above breath. "Ayesha — Conquer, wide as you can. Ivan, anything that breaks formation toward us, you take it. I go for the center."
"And if Conquer doesn't reach it?" Ayesha asked.
"Then I find out the hard way."
They moved.
Ayesha stepped through the doorway first and let Conquer roll outward — not the focused pulse she'd used on the Bone-Crawler, but something wider, deliberately spread thin across the entire room. The twelve orbiting zombies staggered in unison, their formation breaking like a held breath releasing. Several dropped to their knees. Two simply stopped, mid-stride, swaying.
The thing at the center didn't stagger.
But it turned.
Lucian was already moving. Void Step fired the instant he crossed the threshold — half a meter of shadow-space collapsing behind him, putting him past the first ring of disoriented zombies before they'd finished reacting to Ayesha's aura. He crossed the remaining distance on foot, fast, Shadow Bind already gathering in his chest.
The Howler turned fully toward him.
It had been human once — that fact was somewhere in the wreckage of its shape, the way a burned building still had the bones of rooms in it. Its limbs were too long, jointed wrong, ending in hands that had grown into something between claws and roots. Its head hung low between hunched shoulders, and where its chest should have been, a cavity pulsed with that green-white light — not a wound, not anymore. Something that had replaced what used to be there.
It opened a mouth that was mostly teeth and made a sound.
The sound wasn't loud. It didn't need to be. Lucian felt it move through his chest the way he'd felt it through the stairwell door — a vibration with intent behind it, a command broadcast on a frequency his body understood even though his ears barely registered it.
Around the room, the disoriented zombies began to recover. Faster than they should have. The command was overriding Ayesha's suppression, forcing them back to alertness through sheer brute signal.
"Now!" Lucian shouted.
He threw Shadow Bind — not at the Howler's legs this time, but at the cavity in its chest. The pulling sensation in his own chest was sharper than he'd ever felt it, like reaching into something and grabbing hold of a current. The green-white light flickered. Stuttered. For one half-second, the command frequency cut out entirely.
The recovering zombies froze again, caught between two signals and receiving neither.
Lucian closed the distance in that half-second.
He didn't aim for the cavity — instinct, sharper than thought, told him that was wrong, that touching that light directly was a mistake he wouldn't get to make twice. He aimed for the neck instead, where the too-long limbs connected to the hunched shoulders, where flesh was still mostly flesh.
The sword went in to the hilt.
The Howler's shriek was nothing like the Bone-Crawler's. It was layered — multiple pitches at once, like several voices screaming through one throat. The green-white light in its chest flared violently, bright enough that Lucian felt heat against his face, and then—
Ayesha was beside him. He hadn't seen her cross the room. The Luminous Rapier drove into the cavity from the side, through the gap between the Howler's ribs where the light pulsed weakest, and the blade's faint glow met the green-white pulse and the two lights fought each other for one violent second.
Then the green-white light didn't go out.
It cracked.
Spiderweb fractures split across the cavity's surface — darker green, almost black, weeping something thick and tar-like down the Howler's ruined chest. Where it dripped onto the floor, the tile hissed and discolored.
The Howler's shriek changed pitch. Climbed. Became something that wasn't quite sound anymore, more pressure than noise, and Lucian felt his ears pop with it.
The eleven zombies that had gone still didn't stay still.
They lurched upright in the same instant — not coordinated like before, not orbiting. Just suddenly, violently awake, eyes catching the same black light now leaking from the Howler's chest. Faster. Lower to the ground. Wrong in a new way.
Ivan, near the doorway, took a step back without meaning to. "That's not — that's not what was supposed to happen—"
The Howler's too-long limbs snapped wider, joints reshaping with a sound like wet branches breaking. It was bigger now. Worse. The wound in its neck where Lucian's sword still sat didn't seem to slow it at all.
"It's not dying," Ayesha said, ripping her rapier free and stumbling back a step. "We made it worse."
The Howler turned its ruined head toward them.
And screamed again.