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Severide questions his actions after the team deals with a fire at a boarding school on the Chicago Fire season 2 fnale.
An explosion takes place when Casey and Dawson volunteer at a charity run on Chicago Fire.
Severide investigates Bloom's past while the firehouse deals with a tragedy of Chicago Fire.
Dawson and Shay have a girls' weekend away while Jones realizes that her father is putting pressure on Boden about her career on Chicago Fire.
Severide is reminded of his own past while helping an accident victim while Casey and Boden decide how to dock Jones on Chicago Fire.
Severide ends up at the top of the suspect list for Keeler's disappearance on Chicago Fire.
Severide struggles to believe justice will prevail when Vince Keeler goes free while the firefighters must free a girl trapped inside a donation bin on Chicago Fire.
With his sister missing, Severide feels left out of the search while Casey gets new information about his head injury on Chicago Fire.
When a power outage leaves the neighborhood in the dark on a cold night, Firehouse 51 steps in to help on Chicago Fire.
Casey tries to convince Dawson and Severide he's doing better.
Chicago Fire returns from its winter hiatus on January 7th.
With the close of Firehouse 51 looming, Chief Boden and the squad plan to fight the decision on Chicago Fire.
Boden tries one last time to keep the firehouse from being closed while a romance begins between Casey and Dawson on Chicago Fire.
Casey isn't happy to see his parental duties end while Cruz and his brother deal with the aftermath a a shooting in their neighborhood on Chicago Fire.
When a tanker and a commuter train collide, the fireshouse squad is called to the scene on Chicago Fire.
While on a run Severide stumbles upon a child trapped in a construction site while McLeod and Boden argue over the future of the firehouse on Chicago Fire.
McLeod pushes for Boden's early retirement and goes as far as finding a possible replacement and the mole's identity finally comes to light on Chicago Fire.
Severide pushes to have the serial arsonist charge while Clarke is under suspicion for being a mole inside the firehouse on Chicago Fire.
Severide must find proof to confirm his theory on the arsonist's identity while Casey must get used to a whole new lifestyle on Chicago Fire.
Severide tries to anticipate the next attack from the serial arsonist while Casey attempts to deal with the after effects of Heather's accident on Chicago Fire.
Chicago Fire starts its second season with Severide being targeted by an arsonist and Firehouse 51 faces the possibility of being closed for good.