Erin is conflicted when Jamie and Eddie ask her to help drop old charges against a man, Parker Mack, who just bravely rescued a woman from a local hostage situation. Also, Danny and Baez work a case involving car thieves and discover the leader is Victor Lugo, a mobster they've dealt with before, and Baker receives a job offer.

After Anthony is shot while interviewing a witness for an upcoming murder trial, Erin enlists Anthony's archenemy, Danny, to find out who was responsible. Also, Jamie and Eddie get in the middle of a standoff between a police lieutenant and a developmentally disabled man posing as an officer, and Nicky prepares to take the police exam.