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.
The man behind Kelly Severide talks about the return of Chicago Fire.
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.
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.
Special effects coordinator Joe Millinac explains Chicago Fire's biggest mechanical gag to date - a six-foot story car drop!
Check out the steamiest moments from Season 1.
Co-creator Michael Brandt discusses the challenge of crashing a real train.
In a funny PSA, Joe Minoso, Yuri Sardarov and Christian Stolte present the do's and don'ts of bouncy castles.
Joe talks about the location and the children being saved in this episode.
Two stuntmen describe how they captured a daring water rescue on film.
David and Christian talk about what they are trying to do in this episode.
Yuri and Joe talk about how fortunate they are to be able to do this for a living.
Michael talks about how big the set is.
Dawson battles against time during the last obstacle course of her training.
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