Sylvia is indeed pregnant, and swears Andy to secrecy, but he manages to blab the news to the entire squad and annoys his wife. A young woman is stabbed to death on her first-floor apartment. Her father seems convinced that his mentally unstable son did the killing, but Bobby zeroes in on a rude, supercilious young man who was acting strangely in the vicinity of the murder site. He and Diane are able to use some fast footwork to get access to his trunk of bloody knives, and Bobby then manipulates him into talking about how he stalks women with big breasts and then murders them. Andy is busy on a case with Greg where a priceless Torah has been stolen from a synagogue. Andy goes undercover as a rabbi and busts the thief.