Chapter 12

Mark descended the wooden steps one by one, his hand trailing along the rough, unpainted concrete wall of the stairwell. David followed closely behind, clutching the bent steel crowbar like a club, casting nervous glances up at the stairwell opening, which was now nothing more than a tiny pinprick of green light fading away into the distance.
They had been walking down for what felt like hours, though Mark’s wristwatch had stopped completely, the hands frozen at 2:14.
"Mark," David panted softly, his voice echoing strangely in the narrow, subterranean shaft. "How far down are we? According to the blueprints of this house, the foundation shouldn't go deeper than eight feet."
"We passed the eight-foot mark five minutes ago," Mark replied without stopping. "We're underneath the entire subdivision now. Maybe underneath the whole town."
The air grew thicker, heavier with every step, laden with the suffocating weight of subterranean dust and the distant, rhythmic sound of a heavy machine pumping underground—*thump, thump, thump*—like the failing heartbeat of a colossal beast.
Suddenly, Buster’s bark echoed from somewhere up ahead in the dark—a sharp, clear sound that seemed impossibly close and yet frustratingly distant at the same time.
"Buster!" David called out, his voice cracking. "Buster, here boy!"
"Don't yell, Dave," Mark warned, pausing on the steps and holding up his hand. "Listen."
The barking stopped, replaced by a strange, scratching sound against the wood panels lining the walls of the stairwell. It sounded like dozens of fingernails scraping rhythmically against timber, moving in a circle around them, keeping pace with their descent.
Mark pressed his back against the concrete wall, pulling out his dead smartphone and tapping the screen repeatedly, hoping against hope for a miracle flare of light. To his absolute shock, the screen suddenly flashed bright white, illuminating a small, handwritten sign nailed directly into the wooden wall beside the stairs.
Mark held the glowing screen closer to read the faded letters painted on the warped plywood:
PROPERTY LINE. DO NOT PROCEED WITHOUT AUTHORIZATION FROM THE FOUNDER.
"The founder?" David whispered, peering over Mark's shoulder. "Who the hell is the founder? Grandfather was just an investor. He didn't build this."
"He didn't invest in a housing development, Dave," Mark said, a cold horror washing over him as he stared at the sign. "He invested in an excavation project. They didn't build these houses on top of the land. They built them on top of something else, trying to keep it buried."
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Before David could process the terrifying implication, the wooden stairs beneath Mark’s right foot suddenly gave way with a loud, cracking snap.
Mark lurched downward, his foot plunging into empty space as the entire staircase began to collapse into the pitch-black void below.