A woman is sexually assaulted by a man, but she believes the rapist is the same man who went to jail for stalking her. Tucker contemplates retirement.
The pair investigate a bullet which can track and kill a specific target. Meanwhile, Captain Maldonado investigates the ambush.
John Cooper is assigned a new partner on the same day that a breakdown in the emergency call dispatch system delays response times and makes life difficult for the officers on duty.
John Cooper ponders what life would be like after the LAPD, Ben Sherman takes steps to arrest a drug dealer, and things turn dangerous for Dewey Dudek when he pursues a suspect on foot.
Lydia Adams and Ruben Robinson track a killer who cooked his victim's body. Meanwhile, John Cooper and Hank Lucero settle into their new partnership as they spend a shift answering a variety of strange calls.