Phil's job takes up a lot of his time, Luke has his friends over for a poker game, Gloria worries the baby is cursed, and Cam hosts a funeral for the cat's imaginary wife.
The team is called to Louisville to help local authorities determine what led a disturbed man to have a psychotic breakdown at a pharmacy and murder several customers.
Desperate to break free from his connection to Elijah, Wesley tries to plant a listening device in his office to incriminate him; Officer Bradford and his sister, Genny, learn an unsettling truth about their father.
Lucy returns to duty after her abduction and Harper steps in to help her through her first day back on patrol; Nolan takes his son's fiancee Abigail on a ride-along after showing interest in becoming a police officer.
The rookies are asked to develop their first confidential informants; Officer Chen's mother complicates her home life when she comes to stay with her.