Ian Bedford

The Reagans weigh the rights and wrongs of vigilantism when a good Samaritan who has a police record takes action against a terrorizing subway criminal.

The Reagans band together to prevent Joe Hill from being killed in the line of duty like his father when they fear Joe's cover has been blown within the gunrunning outfit he's helping the ATF bring down.

When a call comes in reporting a car being stripped, Burgess (Marina Squerciati) and Tay (guest star Li Jun Li) respond and discover a badly beaten young man and his fiancé missing. Fearing a public relations nightmare Voight (Jason Beghe) and the team are on their best behavior as they search for answers and the missing woman. At the same time, Lindsay (Sophia Bush) surprises Halsted (Jesse Lee Soffer) with a big question. Commander Fogel (guest star Ian Bedford) berates Platt for going over his head to have Tay assigned to District 21.

Intelligence investigates a gruesome case. Upon further examination, it appears the victim was wearing a CPD issued wire at the time of his death. Meanwhile, Burgess (Marina Squerciati) meets her new partner, Julie Tay (guest star Li Jun Li), who came from one of the worst assignments in the city. Together they respond to their first call, and Tay shares details of her past. Additionally, Commander Crowley (guest star Barbara Eve Harris) confronts Lindsay (Sophia Bush) about why she and Voight (Jason Beghe) were at that location on the night that Intelligence pursued Justin's killer.

When the Governor is missing, Nash and Joe lead the "off-the-record" investigation into his disappearance - while Caitlin is determined to find out what they're up to.