Two girls looking like streetwalkers were walking in a hallway to pay a visit to a man who hung around with one of them. She got the key and after getting into the apartment she found her boyfriend dead on the ground. The murder weapon was a TV-set and Briscoe sent it right away to forensic to match the prints. The victim was a lowlife with records for assaults and drug possession. His former girlfriend (Abigail Lopez) was angry at him because he didn't give her a dime for alimony (they've got a son together) and that led to a dispute outside the courtroom with her new fiancée. But it's not the right pattern to follow: the victim was a police informant and some inmates could have held a grudge against him. After locking up the right perp, motive cause detectives to dig in previous murders where forensic played a crucial role, usually mistaken the report: someone has to pay.
Anita Van Buren feels herself guilty of a mistake she made in the past. Briscoe supports her telling she put always the right perp behind bars and once in the lifetime everyone could get wrong: I think she really wanted to resign before talking to him, great Lenny!
