Herrmann pushes Dawson to the limit while Casey faces down his corrupt brother-in-law.
Casey must deal with the fallout from his sister's divorce while Brett weighs a move back to Indiana.
Severide confronts his demons in an unexpected way while Dawson and Mills struggle with their new roles.
Tempers flare after a tragic collision between two fire trucks - and Cruz may pay the price.
Severide returns to Firehouse 51 still reeling from the loss of Shay; Dawson struggles with her new truck assignment; Mills learns more about his father's family; Cruz and Mouch pitch Molly's Two to Herrmann.
In the Season 3 premiere, Boden forces Firehouse 51 to pull themselves together in the aftermath of a tragic explosion.
In the season finale, a boarding school fire leaves Severide shaken, and Boden's grand plans take a detour.
The firehouse pulls together to help Dawson retake the firefighter's exam.
In the first hour of a crossover event with Chicago P.D., the firehouse is tested like never before when a massive explosion sends Chicago into chaos.
Firehouse 51 struggles to cope after the tragic death of candidate Rebecca Jones.
Jones fights to stay on at 51 while Dawson and Shay take a girls' weekend to 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 Firehouse 51.
With Keeler a free man, Severide takes matters into his own hands.
Severide and Chicago P.D. hunt down Katie's kidnapper.
Casey continues to deny his lingering injuries; Shay receives stunning news about Darryl's suicide; Dawson struggles to keep a damning secret.
Are you Team Casey or Team Severide?
Old friends and enemies return to haunt Firehouse 51, for better and worse.
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.
David talks about this being the biggest fire they have ever had.
In a touching ceremony, Chief Boden and Donna get married at Firehouse 51.
Christian Stolte talks about Mouch's budding relationship with Desk Sergeant Trudy Platt.
During a rescue, Mills passes out and needs to be rescued himself.
Stunt doubles Mike Fierro and Olivia Bird detail the process of rappelling down a building and protecting themselves from live fire.
Three squads unite for one epic crossover case starting with Chicago Fire on Tuesday, November 11 at 10/9c on NBC.
While investigating a fire at an abandoned house, the squad stumbles upon a surprising discovery and stages a daring rescue to save one of their own.
Yuri Sardarov, who plays Otis, discusses the upcoming drama in Chicago Fire's third season.
A major explosion occurs at Chicago Medical, where Casey and Dawson are volunteering at a charity run.
Joe talks about the location and the children being saved in this episode.
Severide rediscovers an emotional memory from Shay's past.
Lt. Matthew and Gabriella are ordered off of the roof but are forced to repel down the side of the building.
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