Jack Conley

Cristina tries to help Preston cope with his hand tremor, Izzie attempts to return to the hospital for the first time since she quit the program, Alex deals with a patient who has a long history of injuries, and George and Callie's relationship moves forward.

Patrick Jane and the team investigate the murder of a mayor's aide, and Rigsby and Van Pelt make a big announcement. NYPD Blue’s Sharon Lawrence guest stars as the Mayor.

A leak of classified information from the CIA puts the lives of several operatives at risk, so the team works swiftly to expose the mole.

Stella Kidd returns to Firehouse 51. The team must work together to put out a potassium fire in a tunnel.

Boden, Kidd and Severide work together to protect one of their own. At the Fire Academy, Herrmann meets an inspiring young man. Talk of the annual CFD Gala dominates the firehouse.

On a call with Station 37, a firefighter is struck by a power line and decides to lash out after her injury. Brett is visited by Scott and Amelia.