A "jack the ripper" type murderer is on the loose and after a citywide manhunt, Detectives Benson and Stabler find the killer.

A young man, whose bizarre relationship with his mother has led to a strange stabbing sexual fetish called piquerism, is accused of a brutal rape and murder.

The remains of a woman are found three years after her death, and the Detectives have a tough time finding the killer until a composite photo leads them to the victim's identical twin sister.

A woman disappears, and the Detectives suspect a brutal, serial killer is behind the crime.

Male escorts are assaulted and one is murdered, and the police have a tough time finding the bizarre couple whose sexual fantasy has turned violent.

The daughter of an out of state police officer is a runaway, and the detectives use an Internet journalist to track her.