In the season finale, a boarding school fire leaves Severide shaken as Boden's grand plans take a detour.
The firehouse pulls together to help Dawson retake the firefighters' exam; the station welcomes a new squad member; Shay receives an uninvited guest; Boden makes a bold move.
A massive explosion sends Chicago into chaos - and 51 to the rescue.
Firehouse 51 struggles to cope after the tragic death of Rebecca Jones; Severide performs one final gesture for Bloom; Boden seeks to reconnect with Donna.
Jones fights to stay on at Firehouse 51 while Dawson and Shay take a girls' weekend at a remote cabin.
A father's heroic sacrifice affects the entire squad - and leads to an unexpected threat.
Keeler's disappearance ignites an investigation into everyone with a motive from Firehouse 51.
With Keeler a free man, Severide takes matters into his own hands.
Severide and Chicago P.D. hunt for Katie while Dawson faces the final test of her training.
Firehouse 51 steps in when a blackout causes chaos during a frigid night in Chicago.
Casey continues to deny his lingering injuries; Shay receives stunning news about Darryl's suicide; Dawson struggles to keep a damning secret.
Dawson faces an uphill battle - and unlikely competition - as a new recruit at the academy. Meanwhile, Casey discovers a lingering injury and Mills receives life-changing news.
On the verge of closure, Firehouse 51 bands together in a fight to save the station.
Dawson and Casey's romance escalates while Shay hits rock bottom and goes MIA.
A drive-by shooting forces Cruz to make a big decision while Casey and Dawson struggle to keep their feelings at bay.
Firehouse 51 is thrust into the furnace with a train derailment.
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.
As the firehouse staff deals with a tragedy, Dawson receives a suicide note and Severide looks into Bloom's past. Meanwhile, Chief Boden receives distressing news and asks Shay for help finding a crucial item.
The actor opens up about the finale and the women in Severide's life.
Things heat up between Casey and Dawson during what seems to be a home-cooked dinner date. The question is, will they finally share a kiss?
Guest star CJ Adams talks about his thrilling guest-starring role on Chicago Fire.
Chicago Fire arrives on a scene to put out a stove fire, but find the person responsible in a bizarre location and position.
At the scene of a brutal car accident, Mills springs into action to prevent a victim from committing suicide.
The Fire Chief checks on one of his men.
The actor chats about Mills' father and the future of Chicago crossovers.
Leaders lead from the front. Don't miss this inspirational mashup of Chicago Fire's many heroic moments!
Check out the steamiest moments from Season 1.
Co-creator Michael Brandt discusses the challenge of crashing a real train.
An emergency puts Dawson's firefighter skills to the ultimate test in this four-part digital series.
Out of options, Casey delivers a baby himself at the scene of a car accident.
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