When the squad disrupts a local gang's drug trade operation, the gang members declare war on Firehouse 51.
Severide makes a difficult decision that unfortunately means the end for him and Renee.
The actor opens up about the finale and the women in Severide's life.
The new girl at work has her sights set on Severide.
Charlie Barnett explains how they created - and how he ran into - the fire that burned down his family's diner.
Guest star CJ Adams talks about his thrilling guest-starring role on Chicago Fire.
Led by Chicago P.D.'s Detective Lindsay, the station searches for a known criminal seeking revenge on Severide.
At the scene of a brutal car accident, Mills springs into action to prevent a victim from committing suicide.
Check out the steamiest moments from Season 1.
Out of options, Casey delivers a baby himself at the scene of a car accident.
Chief Boden bounces back from an earlier rejection and proposes to Donna from the heart.
Joe talks about the location and the children being saved in this episode.
David and Christian talk about what they are trying to do in this episode.
Michael talks about how big the set is.
Casey races against a raging fire to save himself - and a rescued baby - from certain death.
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