When Danny accepts a side job as a bodyguard for a recently released ex-con who took the fall for someone else, he uses the opportunity to go after the real criminal. Also, Gormley's wife, Sheila, asks Frank to give Gormley a bigger command position, and Jamie and Eddie witness a lovers' quarrel between two cops that leads them to reflect on their own complicated relationship.

A parole officer's romance with an ex-con leads to a possible cover-up in a gang leader's shooting. As Danny and Baez investigate the murder, Frank tries to halt further violence by talking to a rival gang leader who once killed a police chief.