Chapter 4 - The Sound Behind the Wall
The synthetic voice faded into a low, rhythmic hum that seemed to vibrate directly inside their skulls. Maya stared up at the hallway speaker, her hands clenched into tight fists at her sides.
“Purge sequence?” Sarah’s voice cracked into a near-panic as she pointed her phone’s camera wildly around the narrow corridor. “What does that even mean? Are they going to flood the room with halon gas? Is that a fire suppression thing?”
“Halon starves the fire of oxygen,” Leo said, his eyes wide as he calculated the dimensions of the hallway. “If the system thinks there’s a hardware electrical fire caused by an unauthorized intrusion, it will seal the airtight bulkheads and drop the oxygen levels to zero to protect the main servers.”
“To protect the machines,” Marcus repeated incredulously, his face flushing with anger. “What about us? We’re standing right here in the middle of it!”
“The system doesn't register us,” Maya said grimly. “Because Leo didn't badge us in through the official visitor log. To the mainframe, this hallway is completely empty.”
“We need to break the glass on the manual override box,” Sarah urged, stepping toward the emergency fire axe cabinet mounted behind a thick pane of tempered glass near the corner.
“Don't touch it!” Maya shouted, lunging forward to grab Sarah’s arm just as she raised her hand to strike the glass. “Look at the wiring underneath the cabinet.”
Sarah froze, lowering her hand. Running along the bottom edge of the wooden cabinet was a thin, glowing strip of fiber-optic cable, pulsing with a faint blue light that connected directly into the wall’s data port.
“It’s a trap,” Maya whispered, her eyes tracing the line of the cable into a small access panel that had been unscrewed from the drywall. “That wasn't installed by the school district. Someone wired the manual alarm to the server’s primary logic board. If you break that glass, it won't trigger the fire department—it will short-circuit the entire building's electrical grid and lock every security bulkhead from the basement to the roof.”
“Who would do that?” Marcus asked, shining his phone light down the dark corridor where the ceiling camera had just been disabled.
“Bryce,” Leo said, his voice barely a breath. He looked down at his own sneakers, the realization finally breaking through his stubborn defense mechanisms. “He knew I would try to use this hallway to show off the server room to you guys. He set the whole thing up.”
A sharp, metallic scraping sound echoed from inside the wall directly behind the emergency cabinet. It sounded like heavy steel dragging across concrete, moving at a slow, deliberate pace toward the end of the hall.
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“He’s not just in the building,” Maya said, her heart hammering against her ribs. “He’s inside the maintenance shaft.”
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