Annabel Armour

Severide is hiding a serious shoulder injury sustained in the fire that killed Andy Darden, and grapples with his guilt as he fights to rescue a construction worker trapped in a building collapse. Adding to the burden, Darden's wife Heather turns on Severide at the annual firefighters' barbecue, blaming him for her husband's death. A call is made to an accident site at Hancock Tower, where two teenagers are pinned in a vehicle trapped beneath the falling debris of a broken window washer's cart. Meanwhile, Casey and Hallie work to figure out their future together.

In order to get Abruzzi back in command of the prison’s work detail -- and the escape plan back on track -- Michael must give up Fibonnaci’s location to Philly Falzone. Meanwhile, Michael and Dr. Sara grow closer as the escape gang grows by one. Outside the walls, Kellerman and Hale get some unwanted help tracking down LJ, and Veronica and Nick make a breakthrough.