Law & Order: Special Victims Unit (1999): Confession

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 suspicions arise, and Eric admits to also looking at a website to try to curb his pedophilic urge. With no crime committed, the detectives decide to investigate this "self-help" website for pedophiles leading them to it's creator, Jake Berlin. Eric's rage induced stepfather is also questioned, and shortly after Eric is found missing. The detectives must race to place the clues together to find and stop Eric before any crime is committed.