Russert's old partner joins the homicide unit, but she suspects that he is taking his work frustrations out on his wife. Pembleton struggles with his pride and domestic life as Gee and Bayliss try to convince him to return. Bayliss is partnered with Lewis and on the way to the crime scene gets the ride of his life. Bayliss tangles with a reporter. Beau is in Philadelphia with his kids. The bar has its grand opening.

Tim's cousin shoots a Turkish exchange student and his partnership with Pembleton may be in jeopardy when they both stand on opposite sides of the case. Lewis hires his grandmother to cook at the bar.

A convict is released from prison and begins to get his revenge on Frank by frustrating the investigation he is currently working on and also by terrorizing his wife.