A dancer is followed home and raped by a man with a distinctive tattoo and the details of the attack remind Rollins of a serial rapist she was tracking back home. The detectives arrest Gabriel Thomas, a family man who maintains his innocence, but his description and DNA match this assault and the string of rapes across multiple states that Rollins had been investigating. Although the evidence supports the arrest, the more Detectives Benson and Amaro dig into Thomas' past, the more they begin to believe his story.