Red and the FBI try to stop a dangerous messenger (Robert Knepper) whose appearance is unknown; Liz is thrust into a kidnapping plot.
A college professor involved with a questionable scholarship program is murdered; Danny is investigated for ethical and procedural violations.
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.
Teenage boy Eric Byers admits himself into the squad room, and warns the team about an unnatural desire towards his younger stepbrother, Cory Kelly. Detective Elliot Stabler and Olivia Benson’s…
