Law & Order: Special Victims Unit Season 8 Episode 13 : Loophole

Photograph in the envelope leads Dets. Fin and Munch to the apartment building that houses the crime scene. The investigation reveals the building supervisor has spent a lot of time with the boy in the picture, and he falls under suspicion. The case takes a physical toll on Det. Olivia Benson, the victim, and the boy's mother when they all appear to have similar medical issues. Their symptoms all appear to point to the same origin which uneart...