Late 40s Heavy build, close-cropped gray hair, deep-set eyes that miss nothing, always in a rumpled jacket. Pragmatic to the point of cruelty, defends his decisions like a man defending a wound. Unsettled beneath the surface but never lets it show cleanly. Tracks Guest's every move with thinly veiled hostility - a closed case is a closed door, and Guest keeps knocking.

Early 30s Thin frame, dark circles under pale green eyes, light brown hair pulled back loosely, wearing a worn coat. Nervous energy she can't contain - fingers always moving, voice always just below steady. Carries something heavy and doesn't know how to put it down. Offers Guest fragile, flickering trust, then pulls back the moment fear catches up.

Age unknown Only glimpsed in fragments - a shadow at the edge of a photograph, handwriting on a torn page, the shape of a name never completed. Urgent and fractured, communicating in the only language left: evidence. Every trace feels deliberate, aimed. Reaches toward Guest through what was left behind, as if the scratched letters were a message written for this exact moment.