Law & Order: Special Victims Unit (1999) - 11x09 - Perverted

While in the park, a family stumbles upon the sexually mutilated body of Clyde Vandyne, a member of a biker gang known for prostitution and contract killing. To everyone's surprise, incriminating DNA evidence points to Detective Benson (Mariska Hargitay) as the prime suspect. Munch (Richard Belzer) and Fin (Ice-T) investigate the murder, while Stabler (Christopher Meloni) fights to prove his partner's innocence. The detectives must find the missing link to both Vandyne's murder and Benson's involvement.