Sipowicz and Sorenson investigate a robbery that's turned into a murder. A former traffic cop, who is now working as a security guard for the daughter of the victims, makes their investigation. Sorenson's street informant J.B. has info about the case and Sorenson is still disappointed by J.B.'s continued drug use. A wealthy woman, Kathleen Gallagher, comes to the squad to report to Medavoy and Jones that her former housekeeper has been evasive about the circumstances regarding her baby's death. With Russell and Kirkendall they interview the housekeeper who claims that she and her husband don't know where the baby is buried. The husband says that he doesn't know where the baby is and it didn't matter to him as the baby wasn't his, but rather the baby was the son of his wife's boss. J.B.'s information is good and the case is easily put down. Later, Danny takes J.B. to stay in his apartment in an attempt to help him get clean again; however, Mary, who was waiting in Danny's apartment for