Matthew Fahey

The staff tries to deal with physical and emotional trauma in the wake of the vengeful gunman's deadly rampage; Derek makes a spontaneous decision to resign as chief and return to surgery.

At a party meant to galvanize opposition to the proposed strip mine, Mags Bennett (Margo Martindale) teams up with Boyd Crowder (Walton Goggins) to cut her own private deal with Black Pike Coal. And when the gathering exposes the truth behind her dad’s disappearance, Loretta McCready looks to escape the Bennett clan’s clutches.

After a series of brutal home invasion robberies, Upton immerses herself in the case and finds herself caught between Voight and Halstead.

A teenage girl's death is tied to the illegal sale of prescription drugs; Henry reconnects with a former flame; Cady goes back home.

During a murder investigation, a woman bites Tommy; Megan turns to the new health commissioner for help uncovering the truth behind strange rabies cases.