Lest Ye Be Judged: DCs Callaghan and de Pauli are at odds over whether to believe the statement of Carmen Fitzgerald, an informant who claims that her ex-boyfriend and heroin dealer, Suez, admitted to killing missing person Katrina Mackie. As they dig deeper, the case is revealed to be even closer to Carmen than the detectives had thought, and Cally must draw on a personal connection to make headway.