The team investigates the death of a partially clothed teenage boy wearing a leather mask. The detectives discover that the victim's best friend is the killer and has a video, showing that the boy's death was the result of a backyard wrestling match gone wrong. The trial ends with the boy's conviction on a lesser charge and is sentenced to probation when the key witness, the victim's girlfriend fails to show up at the sentencing hearing. When the girlfriend is injured in an attack instigated by the defendant, the case takes a bizarre turn when information surfaces that the girl is far older than she appears and has been defrauding the foster care system for over a decade.
Episode number: 8x21 Production Number: 08020 Airdate: Tuesday May 15th, 2007