Morretti faces criminal charges after taking things into her own hands while working on a dangerous case. Pierce and Donnie strive to clear her name, but as conflicting evidence builds, even Kate begins to question her own innocence.

Pierce and Lewicki are caught off guard when Lewicki's brother Kenny shows up unannounced. In an unwelcome turn of events, Kenny is named the key suspect in a homicide case, leaving Pierce torn between helping a friend and serving justice. Meanwhile, Lewicki is approached with a tantalizing offer that makes him question Pierce's loyalty to him.