After a 10-year-old girl is found raped and barely alive after having her throat cut in a junkyard, the detectives must find the victim's identity, as well as her attacker. The girl's sketch of her attacker resembles the devil. Fin and Cragen head to a bodega near the crime scene, where the girl was seen wandering around before her attack. They locate the girl's missing backpack, but only find a subway card, which tells the detectives the girl must live in Staten Island. Cragen orders Fin and Stabler to start ringing doorbells.