Harm and Mac find themselves too close for comfort when they are sent to investigate an international incident on a nuclear submarine.
Alvin goes up against Burton Fallin in court, when he agrees to defend his ex wife (Polly Draper) in a wrongful termination case.
After his adoptive father disowns him, Nick becomes the guardian to a true monster: Ronnie Wagner, a thirteen year old boy who killed then raped his adoptive mother.
Nick represents the biggest developer in the city who wants to buy a controversial piece of land for development.
Nick represents Pittsburgh County, the hospital Brian works for, after a patient dies under Brian's care during a routine gall bladder operation.