Tim Hopper

Izzie faces her past and finds comfort in George, while Alex becomes more attached to Jane Doe (Elizabeth Reaser), Meredith and Derek question their own status, and Cristina resolves to fight for her relationship with Burke -- despite her past with Colin Marlow (Roger Rees).

Severide is forced to overcome obstacles at the firehouse. Cruz finds himself at a loss amid the new changes in his family.

Herrmann grows uneasy when a local accident attorney inserts himself into a routine call. Firehouse 51 gets a visitor.

A patient with a life-threatening heart condition makes a decision that puts Rhodes and Choi at odds; the lawsuit against Halstead moves forward; a patient who was misdiagnosed has a flesh-eating bacterial disease; a girl with contagious bacteria.

Novak explores a new romantic connection. Vasquez deals with the aftermath of his father’s recent release.

Casey struggles with his new responsibilities; Severide dreads the arsonist's next attack; Mouch starts campaigning; Dawson and Shay decide they need to get out more.