Officer Nolan and team are charged with escorting a notorious female serial killer to the graves of her previously unrecovered victims. However, when they arrive, they unearth even more than they expected. Meanwhile, Officer Chen meets a seemingly perfect man who sparks her interest, and Officer Lopez worries about Wesley as his PTSD continues to increase.

Lucy returns to duty after her abduction and Harper steps in to help her through her first day back on patrol. Meanwhile, Nolan takes his son's fiancé, Abigail, on a ride along after showing interest in becoming a police officer.