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 grows impatient and takes matters into his own hands. Meanwhile, Jones struggles to fit in as the new candidate at 51.
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.
Severide performs the save of his career, while Arthur escalates the stakes at Molly's.
Pressure is on Chief Boden to resign from Firehouse 51, while mobster Arthur squeezes a struggling Molly's for more cash.
The fallout from a deadly routine call causes a rift between Shay and Dawson. Meanwhile, Severide goes stealth in his pursuit of Hadley.
Are you Team Casey or Team Severide?
With his family's restaurant up in flames, Mills risks his life - and those of others - to save an important item.
Casey finds himself in a difficult position when Detective Voight asks him to let his son off the hook.
Charlie talks about how its like shooting a movie.
Yuri and Joe talk about how fortunate they are to be able to do this for a living.
The newest member of Squad squeezes in tight for his first official save.
A dinner between friends takes a romantic turn with Dawson and Mills.
Forced to evacuate a burning warehouse, Mills must leave a victim behind.
Stairs collapse during a rescue attempt and land Severide in serious danger.
Firehouse 51 arrives at the scene of a disaster.
Severide leads the squad into another dangerous building fire, only to find a familiar face watching them from across the street.
"A" Camera Operator Reza Tabrizi welcomes the challenge of shooting in a collapsed staircase.
Hard decisions are made to keep Firehouse 51's doors open.
Severide feels moved to help the victim of a car accident because the man reminds him of his own past. Meanwhile, Casey and Boden wonder how they should dock Jones Mouch and Dawson each deal with opposite-sex problems and a heroic action has consequences for the squad.
Herrmann and Jones share a somber heart-to-heart at Molly's Pub.
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