While off duty, Rhys interrupts the robbery of store and fails to catch the two suspects, but in the meantime, the owner of a neighboring business is murdered. Suspects include two drug addicts and an odd man who owns a toy store.

Jennifer and Nick are sent to investigate the murder of a young family, unaware they know the victims. Uncovering much more than mass murder, this investigation will shake the Homicide team to its very core. With national security at stake, Jennifer and Nick are ordered undercover by Federal Intelligence. During the course of this assignment, their relationship is re-heated.