Chicago Fire 4x1 - Let It Burn

Lt. Casey, who is at the center of an undercover operation tobring down a trafficking ring run out of Nesbitt's strip club,finds himself in very dangerous territory. Meanwhile, as aresult of the high turnover rate on squad, Severide gets arude awakening when Capt. Dallas Patterson is brought in, muchto Boden's dismay. Dawson confirms her suspicions that her lifeis about to change forever and Jimmy Borrelli, the newcandidate, makes an unusual first impression. Elsewhere,citizens of Chicago band together to take charge of theirneighborhood in protest of a drug den in their area, resultingin ramifications that severely hinder members of Firehouse 51,who are called to the scene to battle a blazing fire.