The brass plate clattered onto the zinc tray of the card reader with the flat slap of a butcher’s cleaver hitting a frozen block.
Lin Mei flinched, then caught herself. She pushed her cracked tortoiseshell glasses higher on her nose. Her breath puffed into the freezing mist, vanishing in thin ribbons toward the dark rim of the rotunda.
The cold here was not normal cold. It bit straight through her sweater and coat, settling against her ribs like crushed ice. The dial on the pedestal read exactly minus two point one four degrees Fahrenheit. It sat locked in place, held by thirty years of stagnant municipal pressure.
“Don’t touch the brass with bare skin, Lin,” Dr. Victor Corvo warned from behind her.
The deputy coroner leaned over Clara’s transport gurney, his Carl Zeiss loupes tilted up onto his forehead. “At this temperature, skin moisture flashes to frost instantly.
You will leave your fingerprints behind.”
Lin Mei nodded. She kept her heavy gloves on and raised the Brass Dwarf-Signal Lantern.
The lantern -- salvaged from Signal Tower Ninety-Six after Julian had audited the Signalman -- cast a crisp lunar-white beam across the pedestal. The clean light cut through the haze of old library glue, ozone, and sulfur hanging over Vault 09.
