First Aired:
Episode 1
The Hose or the Animal
Severide and Stella are on the lookout for her unstable ex.
11 October 2016

Episode 2
A Real Wake-Up Call
Members of 51 end up in a dangerous situation while responding to an auto accident and Stella must make a serious decision about her ex.
18 October 2016

Episode 3
Scorched Earth
Susan Weller helps Casey with an urgent personal matter involving Dawson.
25 October 2016

Episode 4
Nobody Else Is Dying Today
Casey is forced to take extreme measures when a forklift accidentally pierces a tank of acid, causing it to spill and putting a father and daughter in danger.
01 November 2016

Episode 5
I Held Her Hand
Casey and Severide disagree on a potential arson case when the squad fails to save a woman from her burning house.
15 November 2016

Episode 6
That Day
Dawson hits a pedestrian while responding to a call. Casey and Severide continue to investigate an arson case while Chief Boden is in New York to attend an important function.
22 November 2016

Episode 7
Lift Each Other
Gabriela and Antonio's parents come to Chicago for their anniversary, while Chief Boden discovers a secret about his stepson.
29 November 2016

Episode 8
One Hundred
Casey and Dawson apply for permanent adoption of Louie. Jeff Clarke gives Severide an interesting proposition. Otis convinces Herrmann to throw a bash celebrating the 100th anniversary of Molly's, but there are complications.
06 December 2016

Episode 9
Some Make It, Some Don't
Dawson and Casey meet Louie's biological father. In other events, Severide goes back into old habits as he tries to help Anna with a bone marrow procedure and Brett opens up to Dawson.
03 January 2017

Episode 10
The People We Meet
Louie's father throws a wrench into Casey and Dawson's family plans. Severide agrees to a bone marrow donation but a work accident throws everything into flux. Casey and Dawson try to find harmony at home. Meanwhile, Otis and Mouch decide to film a PSA encouraging people to join the Chicago Fire Department but hit a creative wall in the process.
17 January 2017

Episode 11
Who Lives and Who Dies
Dawson tries to keep her emotions in check during an ambo run involving a pregnant teenager, while Casey is forced to make a split-second decision regarding two victims in need of assistance and deal with the repercussions.
24 January 2017

Episode 12
An Agent of the Machine
A dangerous man is after Casey for an incident during a fire call.
07 February 2017

Episode 13
Trading in Scuttlebutt
A superior comes after Boden for making a split-second decision in an accident that overrides him.
14 February 2017

Episode 14
Members of Firehouse 51 are split up and reassigned to various houses in Chicago by Chief Anderson.
21 February 2017

Episode 15
Firehouse 51 responds to the scene of a blaze that puts many lives in danger, including someone related to a Chicago police officer.
01 March 2017

Episode 16
Telling Her Goodbye
Firehouse 51 is taken over by local gangsters.
21 March 2017

Episode 17
Babies and Fools
When similar car accidents uncover the fact that someone may be targeting innocent people, a determined Dawson takes matters into her own hands to help push things along, meanwhile Casey tends to his Alderman's duties.
28 March 2017

Episode 18
Take a Knee
Dawson and Brett have a new trainee assigned for their shift; Severide's father pays him an unexpected visit.
04 April 2017

Episode 19
Carry Their Legacy
Casey is reunited with an old colleague when the squad's rig breaks down in the field.
25 April 2017

Episode 20
Carry Me
Casey takes drastic measures to help Kannell.
02 May 2017

Episode 21
Sixty Days
Cruz faces a possible suspension from the fire department for an off-duty incident.
09 May 2017

Episode 22
My Miracle
A warehouse fire puts the squad in danger; Herrmann tries to make a young boy happy.
16 May 2017

Episode 1
It Wasn't Enough
With most of the squad still trapped in the warehouse fire, Chief Boden makes a risky last-minute decision to save them.
28 September 2017

Episode 2
Ignite on Contact
When Boden learns that the school fire in which his wife was trapped was not an accident, he pressures Severide and Casey to find the cause.
05 October 2017

Episode 3
An Even Bigger Surprise
Lt. Casey butts heads with the new chief who fills in for Boden at House 51; Mullins has an unexpected surprise for Casey when he makes a risky move to stop a man from jumping off the building; Brett learns information about a friend.
12 October 2017

Episode 4
A Breaking Point
While running a secret errand, Dawson finds herself trapped in a collapsed parking structure; pressure mounts on Casey as he begins taking on additional duties; Kidd grows increasingly skeptical of Hope.
19 October 2017

Episode 5
Devil's Bargain
Casey and Severide find themselves at odds after Casey argues with him over the best way to save a teenager entangled in barbed wire. When Casey looks to Boden for help smoothing out the situation, he comes to the realization that he will have to fix it himself. Elsewhere, Otis tries to convince Casey to participate in the beta test for an expensive piece of new firefighting equipment imported from Japan. Meanwhile, Kidd and Hope come to blows over a payroll issue and Brett goes on a date with a
26 October 2017

Episode 6
Down is Better
Kidd is surprised to discover she is being transferred out of the firehouse; Severide and Casey are suspicious and investigate; Otis and Herrmann discuss taking over a rundown bar; Dawson's frustration with her father reaches a boiling point.
02 November 2017

Episode 7
A Man's Legacy
Brett attempts to make a lifesaving decision in the field to someone near and dear to the firehouse family. In an effort to impress Lily, Otis scrambles to get everything together for the grand opening of Molly's North. Meanwhile, Boden becomes emotional following the rescue of a famous blues player from a burning apartment building and Dawson struggles to come to terms with how she has been dealing with her father.
04 January 2018

Episode 8
The Whole Point of Being Roommates
After saving a young girl, Dawson is forced to make a tough decision when she finds out the girl's father is addicted to painkillers. Herrmann loses his cool and gets into an altercation with a police officer after responding to a call. Otis and Cruz are on a mission to find out who Brett is dating. Meanwhile, Boden is skeptical when Donna's brother Julian unexpectedly comes to town.
11 January 2018

Episode 9
Foul Is Fair
Dawson and Casey struggle to communicate; Brett and Kidd compete for the affections of a hazmat officer; Otis, Herrmann and Mouch search for the source of a stench that's making life difficult at Firehouse 51.
18 January 2018

Episode 10
Dawson and Casey do everything they can to locate Bria's whereabouts after discovering important new information. Lt. Severide reunites with Chief Grissom, and old family friend. Meanwhile, Cruz enlists the help of Brett and Mouch to create a new tool and Kidd and Zach go on a date.
25 January 2018

Episode 11
Law of the Jungle
Casey and Severide disagree on the best course of action following a time-sensitive rescue; Herrmann tries to entertain his daughter on "bring your kid to work day"; Dawson joins Brett on a spa getaway; Kidd's social life gets a boost.
01 February 2018

Episode 12
The F Is For
The photographer whose pictures of Casey and Severide during a rescue make the front page of the newspaper chronicles a day-in-the-life story at the Firehouse.
01 March 2018

Episode 13
Hiding Not Seeking
The firefighters help the police track down a bombing suspect.
08 March 2018

Episode 14
Looking for a Lifeline
A domineering husband answers for his injured wife after Casey and Dawson respond to a car accident.
22 March 2018

Episode 15
The Chance to Forgive
Otis and Kidd respond to a call involving a residential fire only to head into danger when gunfire goes off in the house.
22 March 2018

Episode 16
The One That Matters Most
The members of Firehouse 51 come to terms with one of their own being injured and deal with the temporary replacement.
30 March 2018

Episode 17
Put White On Me
Boden has a lapse in judgment in the aftermath of rescuing a young boy. Kidd struggles to win the approval of Severide's mom after a surprise visit and Otis takes on new responsibilities at the firehouse.
05 April 2018

Episode 18
When They See Us Coming
Casey and Severide assist the FBI with an undercover mission; Kidd tries to help Severide come to terms with recent developments.
12 April 2018

Episode 19
Where I Want to Be
Casey grows skeptical of Cordova when a large amount of money turns up missing at the property of Mexican drug cartel.
19 April 2018

Episode 20
The Strongest Among Us
Boden and Severide receive a surprise package after saving a girl from a car accident.
26 April 2018

Episode 21
The Unrivaled Standard
Severide is surprised when Rene Royce returns to the firehouse; Casey helps Chief Boden in his latest pursuit; Kidd regrets a decision regarding Severide; Herrmann disagrees with Lt. Colan Nino over how to coach their son's basketball team.
03 May 2018

Episode 22
Episodes 22 & 23
Episodes 22 & 23: Boden takes a big step in the pursuit of a major career decision. Kidd becomes increasingly distrustful of Renee's motives with Severide. Herrmann has trouble bouncing back after a tragedy. Boden's chances for a promotion are met with potential complications, leading him to take matters into his own hands. Dawson and Casey don't see eye to eye on an important decision, while Kidd finds herself struggling to find time with Severide. Brett and Dawson respond to a tough call tha
10 May 2018

Episode 1
A Closer Eye
Casey struggles with his personal life; the firehouse welcomes a new member; Boden clashes with the new assistant deputy commissioner.
26 September 2018

Episode 2
Going to War
A raging fire consumes a 15-story apartment building complex, trapping victims on the top floors.
03 October 2018

Episode 3
Thirty Percent Sleight of Hand
Boden becomes skeptical of Gorsch's motives; Severide gets involved in a difficult situation following a child's rescue from a car wreck; Foster is tasked with giving Cruz personal advice.
10 October 2018

Episode 4
This Isn't Charity
A series of explosions hit Chicago; Herrmann adjusts to his new duties; Kidd is visited by an old friend.
17 October 2018