Law & Order: Special Victims Unit: Season 11, Episode 9

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 as the prime suspect. Munch and Fin investigate the murder, while Stabler fights to prove his partner's innocence. The detectives must find the missing link to solve Vandyne's murder and clear Benson's name.