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).

Elizabeth and Philip take increasingly greater risks and Stan's pursuit of Directorate S suddenly begins to yield unexpected results.

A member of the Firehouse 51 family remains in peril. Cruz lends a hand to Severide in the ongoing investigation.

Severide overcomes new obstacles at the firehouse. Cruz finds himself at a loss amid family changes.

Elizabeth is back from her injury, Paige's suspicions have increased in her mother's absence and Stan falls for a Russian agent.

Phillip is reunited with an old flame and the reunion leaves him questioning the nature of his relationship with Elizabeth. Meanwhile, Stan and Nina finally give in to temptation.