Patti Murin

Halstead hides the theft of his gun from Manning, while Hank struggles to keep his emotions in check when he sees an old patient.

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

Dr. Charles and Caroline set some major plans, while Ava fights to keep her relationship with Connor. Agent Lee then informs Will of news that may put his life in danger.

Doctors Manning and Rhodes suspect that two separate cases involving sick babies may be connected. A homeless patient's upbeat disposition enlightens Doctors Halstead and Charles, and Dr Choi and a Navy corpsman deal with the toll of gang violence.

Dr Charles' daughter joins the epidemiology department and is immediately put to task when cases of a rare infection are discovered.

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.