The investigation into a girl's disappearance leads to a high-tech kidnapper who uses the Internet to cover his tracks; Rollins reconnects with her sister.

The detectives are spread thin when three major cases come in at midnight. Rollins and Carisi argue over an arrest.

The case of a teenage girl assaulted in the projects leads to a startling discovery. Benson puts her trust in someone from her past.

Rollins and Kat respond to a dangerous domestic violence call while Fin gives his deposition in the lawsuit against him.

Benson's loyalty to Garland is tested. Rollins and Carisi try to keep their witnesses on board when a powerful congressman is identified as a suspect.

Carisi's niece helps a friend report a sexual assault. Benson investigates a college's secret society that preys on female students.

When the only evidence in a crime is a church confession, Carisi must find another way to prove his suspect guilty. Benson agrees to meet with Burton, who seeks to make amends for past transgressions.

Benson tries to help a pop star in a volatile relationship; Rollins struggles with taking the stress of work home with her; Fin teaches a rookie a lesson in respecting fellow officers.

A teenager found unconscious in the park leads to a missing persons investigation. Benson must help Noah come to terms with the past when he questions the origins of his birth.