The 5-7 has to come to terms with each other and the job when one of their own goes down. Goldman gets a new partner. Sgt. Boston teaches Officer Britton another hard lesson. Chaney makes moves under Big Dose's nose. Grey Jr. confronts Goldman about the past. Lt. Webb, Det. Bennett, Officers Ayers & Marquez deals with a woman strung out on a strange new drug. Dr. Nguyen confides in Capt. Baxter. Martina Looses a case to Beasley. Eddie compromises his principles.