The trees thinned as the slope steepened, and the forest gave way to a narrow gorge walled in ice-covered cliff. Joel raised a fist. Fog sat thick between the stones, rolling slow.
"This is it," Ethan said, his breath clouding. "Echo Ridge is just past this bend."
"Doesn't look like much," Ellie muttered, her rifle held ready.
"It's not supposed to," Joel said. "That's what makes it dangerous."
The pass twisted down between the walls. Cracked concrete showed through the snow underfoot — an old service road, swallowed by time. The deeper they went, the quieter it got, until even the wind seemed to stay behind.
They found the gate buried in ice: bent, rusted, man-made. A tattered Firefly emblem clung to the top bar, half torn away.
Carrow ran her fingers along the edge. "This was never on any public map. We only had whispers."
"Then we're in the right place," Ethan said.
Joel put his boot to the gate and kicked. The screech tore across the gorge like something screaming.
They went in.
The tunnel sloped down into damp dark. Flashlight beams cut through it, picking out metal walls filmed with grime. On the left, marker scrawl, faded but legible:
They lied.
Test Group B — containment failed.
We were the cure.
The tunnel opened into an atrium. A collapsed staircase led down to what had been a holding bay — supplies, maybe vehicles. Now it was a tomb. Skeletons lay frozen in their last positions, stripped clean. Some still clutched weapons. Others had folded into corners.
"FEDRA uniforms," Joel said, nudging one with his boot.
"And those are Fireflies," Ethan said.
Carrow's face hardened. "So they fought each other."
Ethan studied the wall — the deep, ragged scores raked through the grime. "No," he said. "They fought something else."
A low groan rolled through the halls.
Everyone froze.
It came again, then a screech like nails dragged down glass — and underneath it, something layered. Two voices. One deep and ragged. One erratic, climbing.
Joel raised his rifle. "Infected."
"No," Ethan whispered. "Listen."
They spread out toward the hallway the sound was coming from. Around the corner, Ellie sucked in a breath.
The thing at the far end of the corridor stood hunched, skin mottled and threaded with black veins. Bulbous eyes glinted under plates of fungus, twitching. Its limbs jerked with a speed that didn't match the hunch of its posture — coiled, ready. Patches of its flesh pulsed, like something underneath was still alive and writhing.
"Is that a hybrid?" Hale whispered, rifle up.
"What's left of a test subject," Carrow said, sliding right.
It shrieked — metallic, high, barely human — and lunged.
"DOWN!" Joel roared.
The hallway became strobing dark. Joel's muzzle flash lit the walls as he put rounds into the creature's chest; it staggered and kept coming, momentum carrying it forward. Ellie dove behind an overturned cart. Ethan dropped to one knee and fired twice at its knees — it barely flinched.
Carrow tried to flank. Her boots hit a slick of oil and went out from under her; she slammed into the wall with a cry, and a shard of something tore deep into her arm.
"Carrow's hit!" Hale shouted, pouring short bursts into the creature's side.
It twisted mid-leap off the wall, claws raking for Joel. He sidestepped, felt the talons kiss his coat, and put two more rounds into its abdomen.
"Too fast!" Ellie shouted, leaning out to graze its fungal crest with a shot.
Ethan's eyes found it — a rusted oxygen tank, half-buried by the broken wall.
"There! Cover me!"
He sprinted, slid across the slick floor with bullets cracking past, grabbed the tank and rolled it into the creature's path. It turned toward Ellie, lunging —
Ethan raised his pistol and fired.
The tank went up in a fireball that lit the whole corridor white. The shockwave threw them all back. Heat and smoke rolled through the chamber.
Ethan coughed, ears ringing. Through the haze he saw the thing's remains smoldering in the flames, one arm still jerking. Then it stopped.
"Get Carrow clear!" Joel barked.
"I'll take her," Hale said, hauling her upright. "We'll circle back through the top hall!"
"Meet at the extraction tunnel!" Ethan shouted, eyes still on the fire.
Hale nodded once and vanished into the smoke, Carrow leaning hard on him.
Ethan walked forward through the char, boots crunching, and stopped over what was left of the corpse. Something cold settled in his gut.
"Not just infection," he said. "This was engineered."
Joel's jaw tightened. "Then whoever built this place wasn't looking for a cure."
They moved deeper.
In a side room, a locked server cabinet hummed behind a flickering monitor. Ethan worked the keys until the screen steadied.
PROJECT: GREYREACH — LOG ENTRY 172
Subject D-09 shows resistance to Type II strain. Potential vector candidate. Parent lineage confirmed: Winters.
Ethan's hands clenched on the desk edge.
"Mom and Dad were here," he said.
Ellie read over his shoulder. "They were studying you?"
"No." Slowly. "They were trying to protect me."
Another log loaded.
Facility breach detected. Relocation team en route. Target: D-09 to be secured or neutralized.
Joel's voice was ice. "They planned to take you. Or kill you."
A crash echoed from below. Dust sifted down through the light.
"Second floor's giving out," Ellie warned.
"Time to go," Joel said.
But Ethan stood frozen, eyes locked on the last message flashing on the screen.
Project terminated. Subject D-09 presumed dead. File locked.
Ellie's hand closed around his sleeve. "Let it go. We're not losing you to ghosts."
They ran. Behind them, the facility groaned and began to come apart.
Nearly half an hour later they came up out of the lower tunnel into a concrete throat of cracked tile and broken rebar, a dim shaft of daylight filtering through a collapsed ceiling. Joel reached the surface access first — an old metal ladder bolted into the wall.
Ethan braced the ladder while Ellie climbed, one hand ready at her back in case a rung gave. Then he followed her up, out into the icy wind, and his breath caught.
A narrow mountain basin. Snow drifting down through still air. Behind them, the black mouth of Echo Ridge gaping like a wound.
Ellie collapsed into the snow, laughing breathless. "I'm starting to hate underground places."
Joel crouched with his rifle up, scanning the white. "We give Hale and Carrow an hour. If they don't show, we move. Fast."
Ethan nodded without speaking. He was still holding the printout he'd torn from the terminal, folded and crushed in his grip. In the top margin, small and precise, his mother's initials.
He stared down at it.
"Your mom wrote that?" Ellie asked gently.
"I think so."
"You okay?"
"No." A beat. "But I will be."
They set camp behind a ridge of stone and ice, low and tight. Ethan built a small fire from a fuel-cell canister and broken chair legs they'd carried out.
The night came down colder than the one before.
Ellie sat beside him, arms around her knees. "You think they'll make it?"
"Hale's tough," Ethan said. "Carrow too. They'll find a way."
"Just like us?"
"Yeah," he said. "Just like us."
The fire crackled. Snow melted off Ethan's gloves as he turned them near the flame. Across from him, Joel sharpened his knife in slow, practiced strokes.
After a while Joel spoke. "That hybrid. The way it moved. That wasn't infection. That was conditioning."
"Or programming," Ethan said.
Ellie frowned. "You think they were making weapons?"
Joel stopped sharpening. "Wouldn't be the first time someone tried."
Ethan unfolded the crushed log sheet and read the last line again.
"Subject D-09 presumed dead."
"They thought I was gone," he whispered. "Years ago."
Ellie leaned forward. "So what does that mean? You were taken? Hidden?"
"I don't know. But someone knew I existed — and tried to erase me."
Joel slid the knife back into its sheath. "Then they'll try again. Once they know you're breathing."
The fire popped. For a moment none of them spoke.
Then Ellie said, low, "We still going to Jackson?"
Joel nodded. "We rest. Then we head that way. Tommy needs to know about this place. And whatever's coming."
"And maybe someone there knows how deep this project went," Ethan said.
"Or who else they're still hunting," Joel said.
Silence settled back over the camp, heavy and cold.
But they weren't alone in the night.
Far above, near the ridge they'd come down, two figures held still behind a frost-covered tree. One adjusted a scope, watching the tiny firelight flicker between the rocks below.
"Confirmed," the spotter whispered. "D-09 is alive."
The second figure raised a radio.
"Echo Ridge survivors located. Proceed with containment."