The case involves the beating of a seven-months-pregnant woman, whose unborn child has been torn from her body via a primitive cesarean section. Among the many witnesses questioned is the woman's husband, a psychiatrist with several devastating secrets and knows more about his wife's beating than he's willing to admit.

Cellist Cassie Germaine is attacked in her apartment. Benson & Stabler's investigation leads to discovery of hidden cameras streaming Cassie's home activities to a web site with only one discovered visitor, and a shrine.

The brutal rape and subsequent death of a female motorist turns out to be an informant for the FBI acting as a cyber vigilante for catching on-line pedophiles to capture the predators. Stabler, along with the homicide detective who found the victim's husband murdered, follow the trail of evidence for the latest victim she had been tracking, leading them to the US Attorney's Office and a trip to Prague for Stabler to assist the Czech authorities when they find the kidnapped girl.

A quadruple homicide with sexual overtones is just the start of an intense rampage of killings that brings a homicide detective into the mix. As the entire squad races against time to prevent further victims, the evidence leads Tutuola and Deuthorn to a building superintendent, his two sons, and a cross to bear.

A missing teenager found beaten and tied up in a college dormitory under construction claims that she was raped by three students, but as the investigation proceeds and information obtained by the police and the press causes her story to unravel quickly, the girl recants. Since Benson remains convinced that a rape did occur, the focus of the investigation shifts to the girl's overly-protective stepfather who has resisted the investigation from its onset. When the girl finally tells the truth about the attack, it becomes apparent that her lies were calculated to protect her innocent stepfather from physical and financial ruin, as another victim of her attacker comes forward.

Det. Stabler goes undercover to determine if a recent parolee is reverting to his rapist urges.