Callaghan is approached by a former informant, Carmen Fitzgerald, who claims she has information in relation to the murder of her best friend, Lyndsey Mackie, who disappeared on New Year’s Eve. She claims that Lyndsey was murdered by her pimp, but has no information as to the whereabouts of the body. Cally and De Pauli interview the girl’s father (Del Henney), who still holds out hope that his daughter is alive.