Theo Voss yanked his wrench free from a rusted valve, wiping sweat and grease from his brow as the pipes above him shuddered. Steam hissed so loud he almost missed the deep, unnatural rumble that vibrated through the steel grating beneath his boots. Lights flickered overhead, throwing jagged shadows down the maintenance tunnel. He glanced at the open hatch beside him, its lock broken, and the Council-marked drilling rig jammed inside. A gloved hand tightened around the evidence as footsteps echoed from the far end of the corridor. Theo shoved the rig into his satchel, heart pounding, and ducked behind the pipe clusters just as a lantern beam swept the passage. The air reeked of scorched metal and hot oil. Somewhere above, another tremor shook loose flecks of rust.
"Who's down there?"
barked a voice, sharp with suspicion. Theo pressed himself against the pipes, holding his breath, every muscle taut as the searcher approached.