Danny and Baez investigate a local bombing, but meet with tension and resistance from the community during the investigation. Meanwhile, Frank must deal with the political fallout when a man punches an officer who was overly aggressive in his questioning.

When Danny learns from Nicky that there's a deadly new brand of heroin hitting the streets, he begins an all-out manhunt for the distributor. Meanwhile, Frank pulls out all the stops to assist in getting the drugs off the street.