The cold in the western conduit didn't creep; it bit.
With Node 2 dead and its primary coil slagged into cherry-red ruin, white frost was blooming across the rusted iron deck plates like spreading mold. The refugees had been evacuated toward the Central Conduit, leaving the long corridor desolate, silent, and smelling sharply of scorched Bakelite and ozone.
Old Oakes was twenty feet away, his greasy leather apron wrapped tight over two wool jackets, grunting as he disconnected the secondary bypass cables.
"We've got an hour before the ambient temperature drops enough to crack the glass insulators on the main trunk line, Danial!" Oakes called out, his breath pluming in thick white clouds as he wiped grease from his forehead. "If we're going to the Deep Sump, we need to load the sleds now, not stand around admiring the rubble."
"Five minutes, Oakes," Danial replied quietly, not taking his eyes off the floor.
"Five minutes in this chill will freeze your toes right inside your boots, boy," Oakes muttered, though his tone was more weary than sharp. He tugged at a rusted grounding strap, cursing under his breath as it snapped with a brittle metallic ping. "Told Vane three weeks ago these old Directorate lines were brittle as dried twigs. Nobody listens to an old wrench-monkey until the sparks start flying."
Danial didn't answer. He was still on his knees in front of the scorched junction box at the base of Pillar 12.
He wasn't looking at the melted shipping bolt he'd pulled from the raw Selar matrix. He was looking beneath it—at the small, recessed lip where the high-density carbide shears had bitten through the main lead feed.
Maya stepped up beside him, carrying a long brass lantern. The warm yellow beam flickered over the dark corners of the iron pillar, casting long, swaying shadows against the frosted walls.
"Danial," she said softly, her coat pulled tight around her chin, her teeth chattering slightly. "Vane is double-checking the locks on the Sump airlock down on Level 5. We should be with her. Standing here staring at melted copper won't bring Node 2 back."
"Look at the shear mark, Maya," Danial said without looking up.
Maya sighed, lowering the lantern so its beam focused directly on the severed copper trunk. "Danial, we know what happened. Someone jammed a bolt in and cut the feed to trigger a cascade."
"I know," Danial said. "But look at the cut itself."
Maya leaned down, her brow furrowing as she squinted through the lamplight. The cut wasn't jagged. It hadn't been chopped with a chisel or chewed through by brute force. It was a clean, forty-five-degree diagonal slice—a precision bite that required a dual-action compound jaw.
"I told you at the pillar," Maya whispered, her voice dropping as she remembered the previous hour's chaotic discovery. "High-density carbide shears. Standard Council issue for maintenance engineers."
"No," Danial said, reaching out with his gloved hand and pointing to a tiny, microscopic flaw along the edge of the copper face. "Look closer at the corner of the bite. See that tiny crescent-shaped nick in the middle of the cut?"
Maya lowered herself until her cheek almost touched the frozen iron plate. "It's just a burr..." She paused, her eyes widening as she adjusted the lantern angle. "Wait. No. It's an indentation. The blade had a flaw."
"A damaged jaw," Danial murmured. "The right blade has a chipped tooth."
"Plenty of tools in Sector 4 have chipped teeth, Danial," Maya countered, trying to sound logical, though her tone wavered. "Half the gear in the workshop was scavenged from scrap heaps three decades ago. Oakes's tool racks are full of rusted junk."
"Not just any tool," Danial said.
He reached into his satchel, pulled out the tool roll Oakes had given him on his second day in Sector 4, and unrolled it on the frost-covered floor between them. He didn't pull out a tool—he pointed to an empty elastic slot near the center of the leather wrap.
"Yesterday morning, when we were wiring Node 2, Oakes dropped his heavy carbide shears down the drainage grate near the workshop," Danial said, his voice flat, completely hollow of emotion. "He bit through a hardened steel rivet by mistake last week and chipped the upper right tooth. I spent twenty minutes with an oilstone trying to grind the nick out for him while he was fixing the pressure valves."
Maya stared at the empty slot in the leather roll, then back at the crescent-shaped mark on the severed copper wire.
"Oakes?" she whispered, a sudden wave of horror creeping into her tone. "Danial... no. That's impossible. Oakes built Node 1 with us. He worked with your father in the Outer Rim! He risked his life at Sub-station 8 when the steam-pipes ruptured!"
"I didn't say it was Oakes," Danial said softly.
"Then why does he have the shears?" Maya pressed, her hand trembling slightly as she held the lantern higher. "If it's his tool—"
"I didn't say he had them," Danial interrupted.
He stood up, taking the lantern gently from her trembling fingers. He lowered the beam, tracing the deck plates three feet back from the junction box, where the layer of frost was thinner.
In the fine dusting of white ice, two distinct sets of footprints were visible. One belonged to Danial's own small, square-toed boots. The other was a set of heavy, steel-toed work boots with a cross-hatch tread—Oakes's boots.
"He was here when it blew," Maya said, her mind racing as she tried to make the pieces fit. "He ran in right after us! He could have made those prints when he was checking the primary line with you!"
"Look at the direction of the heel," Danial pointed out, tracing the outline with the tip of his boot. "These prints were made *before* the thermal bloom. They're covered by the first thin layer of frost, not stamped over it."
Maya knelt down beside the trail. "He... he was standing here before the short?"
"Look closer at the heel of the left print," Danial whispered.
Pressed deep into the thin frost, right in the center of the cross-hatch tread, was a tiny, hardened speck of bright blue lacquer—the exact shade of the blue enamel paint used on the high-voltage storage batteries they had stolen from Silas's vault in Brimstone Alley.
Maya's eyes went wide. "The batteries... we only brought them in three hours ago."
"They were brought to the postal basement at midnight," Danial said, his voice dropping into a razor-thin whisper. "Only five people were in that room when Oakes unboxed them. You. Me. Oakes. Vane..."
He paused, his eyes narrowing as he stared down the dark archway leading back toward the staging bay.
"...and Gears."
Maya took a slow, sharp breath, her gaze darting toward the shadows. "Gears didn't come to Pillar 12 with us when the alarm sounded. When the siren went off, I asked him to grab the spare fuses from the workshop, but he said..."
"He said he was going to secure the battery sleds down at the Sump airlock," Danial finished for her. "He wanted to be near the escape route."
"But the boots—"
"Gears wears Oakes's spare work boots," Danial said flatly. "The old man gave them to him three days ago because Gears's soles were worn through to the wool and he was walking on bare rags. Oakes let him borrow his backup tool roll, too."
Maya stood up slowly, her knuckles white around her coat collar. "Gears... he's only seventeen, Danial. His family lives in the lower residential blocks. Why would he do this? Silas? Did Silas pay him?"
"Or the Directorate," Danial said grimly. "Sterling doesn't just buy envoys. He buys desperate kids who think a silver pass gets their families out of the cold."
Before Maya could reply, the heavy iron door at the end of the conduit creaked open with a harsh, echoing groan.
Old Oakes shuffled back into the corridor, hauling a heavy wooden sled stacked high with copper spools and two of the blue lead-acid batteries. He was panting heavily, wiping sweat from his forehead with the back of his greasy sleeve, completely oblivious to the freezing air around him.
"Sled's loaded, kids!" Oakes called out, his voice echoing off the frosted girders. "Gears is down at the Level 5 airlock right now, checking the hand-winch for the drop into the Sump. He says the cable's running smooth, but we're running out of steam up here—literally. Let me tell you, that boy works fast when he wants to get out of the draft!"
Danial looked at Oakes, then down at the tool roll in his hands. "Oakes... did Gears borrow your heavy shears this morning?"
Oakes paused, wiping his spectacles on his apron before shoving them back onto his nose. "Eh? Yeah, yesterday evening before we locked up the basement. Said he needed to trim some rusted stay-wires down by the winch housing. Why? You need 'em?"
"No," Danial said quietly, closing the tool roll and shoving it deep into his satchel. "Just checking."
"Well, don't stand there asking about hardware, boy!" Oakes barked good-naturedly, picking up the tow-rope of the sled. "The frost is working its way down the main trunk. If we don't get these cells to the lower Sump before the airlock seals, we'll be freezing our gear off right alongside the refugees."
Oakes turned and began hauling the sled down the dark corridor, his boots crunching loudly on the frozen iron floor.
Maya leaned in close to Danial, her breath coming in fast, shallow plumes. "Danial... Gears is down at the airlock right now. Alone with the winch. If he knows we're coming with the rest of the batteries..."
"He doesn't know we found the shear mark," Danial whispered, his voice taking on the cold, hard precision he had learned from analyzing his father's technical journals. "He thinks we're blaming the cultists or a random Council sabotage team."
"We're three hundred feet above an unmapped abyss," Maya urged, her voice shaking with betrayal and sudden, sharp fear. "We're about to go down into toxic steam, deep water, and total dark with a boy who might be taking orders from Silas—or worse, Sterling. We can't go down there with him behind us!"
"If we accuse him up here, Vane will arrest him," Danial reasoned, watching Oakes's receding shadow. "Gears panics, he tells his handlers—or Silas's men in Brimstone Alley—and they target Node 1 before Vane can reinforce the perimeter. We lose our only remaining power grid before we even reach the Sump."
"So what's the plan?" Maya asked, her eyes searching his face. "We just pretend everything is fine while he holds our winch cables over a three-hundred-foot drop?"
Danial looked down the dark corridor toward the staging bay, where the heavy hydraulic winches were waiting to lower them into the freezing abyss of the Deep Sump.
"We let him lead us down," Danial said, his fingers tightening around the cold brass handle of the lantern. "We get the batteries to the Geothermal Vent. We keep him where we can see his hands. And the moment he tries to cut another line... we make sure he's the one standing on the wrong side of the wire."