S4, E13: Carlos Torres is found dead in his jail cell and had only been there for eight hours. The murder is initially thought to be gang-related but the Medical Examiner explains that he was sodomized, rupturing his colon, and the attack happened while he was in police custody. Detective Benson (Mariska Hargitay) and Detective Fin (Ice-T) are dispatched to retrace Torres' whereabouts before he was brought to Rikers, and he was at the 26th Precinct and their first stop is questioning officers, Les Cooper (Terry Serpico) and Randall Grant (Jason Catalano). Their supervisor says Cooper is dangerous and likes to rough up suspects, so Benson and Fin find the two cops. There was a third cop that night, Luke Edmunds (William Mapother), who was hit in the head by Torres and he is out on medical leave. All indications are that the cops arrived at a local gang hangout, found Torres then roughed him up.