After zeroing in on the suspect responsible for the bioterrorism that's gripping Chicago, the PD prepares to undertake their biggest manhunt yet. Upton is torn between helping track down the perp and providing emotional support to the scared young girl that needs her. Voight fears his team is being sent on a wild goose chase.

Starring:

Jason Beghe, Jesse Lee Soffer, Patrick John Flueger, Marina Squerciati, Laroyce Hawkins, Amy Morton, Tracy Spiridakos, Paloma Nozicka, Brianna Borger

Genre:

Action, Drama