After a man (Tom Irwin) is found brutally stabbed in a parking garage; Benson and Stabler discover that the family man might have had an unusual hobby. When Benson and Stabler go undercover at a swingers club they meet a popular lady named Cassandra Davina (Rose McGowan) and her jealous boyfriend, Doug Loveless (Ryan Hurst). As tensions grow, the detectives question just how far jealousy can push someone.