Holly visits Lou ahead of her psych evaluation. Jerome accesses Rothstein's records and uncovers an unexpected connection to Ida. Hodges and Montez look into the death of Stan McNair. Morris and Alma are caught in the act.
A demented serial killer taunts a retired police detective with a series of lurid letters and emails, forcing the ex-cop to undertake a private, and potentially felonious, crusade to bring the killer to justice before he can strike again. Based on the bestselling novel by Stephen King.