S8, E5: When an assailant rapes his victim twice, detectives Stabler and Beck link the case to victims of multiple rapes. Based on the timeline of those subsequent attacks, Dr. George Huang suspects the rapist has one disturbing motive for these crimes. Tensions flare between the detectives as they make a difficult decision to help bring in the dangerous perp. Mariska Hargitay, Dann Florek, Ice-T, Richard Belzer, Diane Neal, and Tamara Tunie also star.