Alexandra Metz

Casey falls under the thumb of a rogue cop after a horrific car crash, while new girl on the block Nicki pays Severide special attention.

Chief Boden comes under fire when the press blames him for the death of a homeless man, while Shay has a nasty run-in with her ex-girlfriend.

Alicia and the team race against the clock in the appeal case of a client on death row. Meanwhile, Peter prepares for his first debate with Glenn.

Pete rethinks his career after learning that not every call has a happy ending, and Shay decides if she has a future with a married woman.

The Firehouse 51 crew has a Thanksgiving to remember when drugs, a car accident, and a gang shooting get in the way of traditional holiday pastimes.

Mills fights to save the life of a driver injured in a car wreck. Plus, a member of the crew makes a life-changing decision.