Jessica Ferrarone

A dead hooker's cell phone gives Sipowicz and Clark a lead on the man who may have iced a co-ed found near the crime scene; Tony's ex returns to make amends for her past indiscretions; Jones and Medavoy force a confession out of a kid who may be innocent.

When NYPD Auxiliary Police Officer Heather Peterson is murdered, the detectives find her diary that details the sexual habits of the police officers at the 15th precinct. These findings cause the detectives to suspect the officers of the 15th precinct had something to do with her death, and the investigation of the cops cause tension between the officers and the detectives.

The squad must sift through a dead social worker's depressing caseload to find a suspect in her death. Andy tries to fulfill a late cop's final wish amid accusations that he and John ratted out fellow officers to internal affairs.

While arranging to move into Connie's place, a frenzied Andy helps Clark Sr. escape from IAB's control. Meanwhile, Ortiz and McDowell work a shrink who may hold a clue to the death of a sexually voracious young woman; Tony's ex-wife picks up an old habit.

Tony faces a grim assignment after visiting a crime scene involving a familiar face; Connie pegs a social worker for the death of a baby; A carjacking case leads Andy and John to a brother-sister team involved in drug running.