Registrar Silas Kade is a slender human man who seems permanently folded around an invisible desk. His pale face has the waxy translucence of someone who spends too many hours beneath archive lamps, and his nervous dark eyes flick constantly behind wire-rimmed spectacles repaired with red thread. His fingertips are stippled with black, blue, and rust-colored ink, while the skin beneath his nails carries a faint metallic sheen from years of handling clockwork seals. He moves in quick, angular starts, as though each footstep requires written authorization, yet when danger arrives he becomes startlingly fluid, slipping between shelves with the silent grace of a practiced thief. His most contradictory feature is his smile, which is warm, broad, and almost boyish, despite the permanent terror in his eyes. People often remember him less as a frightened clerk than as a candle flame trying very hard not to go out.