Chapter 8 - The Sound from Beneath

The heavy pounding shook the dining room floor so violently that the glass bowl on the sideboard slid an inch to the left, its base clinking sharply against the polished mahogany. Lily screamed, burying her face deep into the folds of Elena’s white blazer, while Toby grabbed the edge of the table to keep from losing his balance.
Agent Vance froze, his gloved hand still gripping the iron key in the floor. The two men in gray suits dropped their tools, their eyes darting nervously toward the dark corners of the room.
"What the hell was that?" the younger agent muttered, his hand dropping instinctively to his hip, though he carried no weapon.
"I told you," Mark said, his voice terrifyingly calm as he watched them with a dark, cynical satisfaction. "That vault wasn't built to store municipal records. It was built to contain whatever survived the collapse of 1912. And for over a century, it’s been living on whatever trickled down through the soil."
Vance slowly stood up, brushing dust from the knees of his trousers. He looked pale, but he refused to show weakness. He glared at Mark, trying to reassert his authority. "That’s just structural settling. Old timber shifts when weight is applied."
"Structural settling doesn't breathe, Agent Vance," Elena countered, her voice sharp and trembling as she held her children tighter. "You heard it. It’s right beneath the rug. It knows the lock is turning."
Another heavy thud echoed from below, followed this time by a scraping sound—the exact same metallic drag Toby had heard through the heating vents the night before. It was moving in a slow, deliberate circle directly beneath the dining table, tracing the perimeter of the concealed chamber.
Vance swallowed hard, his professional composure slipping. He looked down at the brass keyhole, where the iron key was now vibrating on its own. He looked back at Mark. "You knew about this when you bought the house. The bank didn't trick you. You bought it on purpose."
Mark didn't deny it. He walked slowly toward the sideboard, picked up one of the hardened bread rolls from the glass bowl, and turned it over in his hand.
"My grandfather was the lead engineer on the 1912 municipal excavation," Mark said quietly, his eyes fixed on the gray crust of the bread. "He was the one who sealed the vault when the earth gave way. He spent the last twenty years of his life making sure nobody ever opened it again. But when he died, the deed passed to me. And the county council wanted the land back."
"The registry book contains records the county needs to recover," Vance insisted, though his voice lacked its previous conviction. "There are assets down there—municipal bonds, historical documents worth millions."
"There is nothing down there except hunger," Mark whispered, raising his eyes to meet Vance’s gaze. "And now you've given it a key."
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Before Vance could reply, the brass flap on the floor blew open with explosive force, sending shards of splintered oak flying across the room.
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