Det. Karen Duvall

Karen Duvall is a Colorado detective who catches a strange, careful pattern in a rape case nobody else has connected yet. Quiet and precise, she treats the victim's account as evidence worth protecting rather than doubt worth testing, and starts building a case with a patience that looks almost unassuming.

Merritt Wever plays competence as something gentle rather than showy — her attentiveness reads as respect, not procedure. The writing lets her be thorough without turning her into a saint or a genius; she simply listens, checks, and keeps going, which makes her decency feel earned rather than performed.