Mia Park

Lt Casey must work with Voight and the Intelligence Unit, Shay grows increasingly excited about the prospect of motherhood, and everyone comes together to support the opening of Molly's.

The shooting of Dr Charles moves to the courtroom. Dr Halsted and Dr Manning work on a heart-wrenching case.

As the city is thrown into chaos by freezing temperatures, Sylvie gets trapped in a life or death situation. Plus, an abandoned baby is found at the Firehouse.

Dr Manning investigates a young boy's background after the child is admitted with a broken wrist. Dr Choi tries to deal with an erratic patient.

Dr Manning goes to extreme measures to help a fearful pregnant woman and Dr Choi and April try to strike a balance at work. Also, Dr Charles and Dr Reese continue to disagree about their patients.

Doctors and nurses deal with a staff member's suicide; Choi and Halstead face off over how to treat a patient who is experiencing stroke symptoms; Manning treats a boy who fell into the river; Rhodes examines the man who saved Dr Manning's patient.