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).

Chief Boden turns up the pressure on Severide and Casey to investigate the cause of the fire that trapped his wife; Mouch is over-competitive in the firefighter muster challenge.

Elizabeth is back from her injury, Paige's suspicions have increased in her mother's adsence 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.

Philip and Elizabeth are ordered to go through with a meeting that could potentially be a set-up. Stan's investigation puts him and the FBI even closer to Philip and Elizabeth.

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