Tosin Morohunfola

Lt Severide is targeted by an arsonist, Battalion Chief Boden clashes with Gail McLeod the anniversary of Andy's death, Shay has suspicions, and Mari visits Mouch.

Dr Charles learns a troubling fact about the man who shot him. Meanwhile, Dr Rhodes and Dr Bekker come to an agreement during a complicated surgery.

Family secrets bubble up to the surface when Maggie's sibling arrives back in town. Dr Manning works on a case that is getting lost in translation.

The team treats a 9/11 hero in need of new lungs. Dr Choi deals with a difficult parent. There's friction between Dr Halstead and Dr Manning.

Halstead and Manning deal with arguing brothers, one of whom needs a replacement kidney. One of Dr Reese's patients comes to a crossroad.

Dr Rhodes is tasked with delivering some devastating news. April suffers an accident and Dr Halstead presses her into seeking treatment.