As Vic hopes his immunity deal will help keep his family together, and Shane takes extreme measures to keep his pregnant wife from being charged with murder, Dutch finds he's a suspect in the disappearance of a teenage serial killer's mother.
Mara breaks her collarbone and accidentally shoots and kills an innocent person when Shane's plan to get more money goes sideways. Meanwhile, Vic contemplates leaving Ronnie out to dry and taking a deal with the Feds without him.
Shane's plan to get rid of Vic and Ronnie falls apart and threatens to be exposed. Cruz Pezuela asks Vic to strong-arm a priest, while David Aceveda joins Vic in working with the feds to bring Pezuela down.
After Vic learns that Guardo wasn't Lem's killer, he begins to suspect that Shane could have been responsible. Meanwhile, Vic does a favor for a city official, hoping it will give him an ally in his quest to avoid early retirement.
As the Strike Team is threatened with exposure in the money train heist, Claudette goes it alone in order to find evidence of a public defender's drug addiction.