Observed by an FBI psychiatrist, the detectives uncover a horrifying motive for the slaying of a software company employee by a fired colleague when they learn of the suspect's bizarre relationship with his overbearing mother and a strange sexual fetish called piquerism.

A "Jack the Ripper" type murderer, who justifies his crimes with paranoid religious motivation set on by a rapidly deteriorating medical condition, is on the loose. After a citywide manhunt, Detectives Benson and Stabler are tasked with finding the killer.

A man, who is shot and raped outside a gay bar, initially doesn't want to cooperate to find his shooter. When he finally does, the investigation leads to his family and turns his life upside down.