About this season
Milestones and transitions mark a new chapter for Firehouse 51. As the team faces the unknown, legacy and loyalty remain at the heart of every call.
Episodes (22)
1. Mayday
8.9Aired 22 September 2021 • 42 min
Firehouse 51 deals with the aftermath of the capsized boat rescue. Gallo, Ritter and Violet discuss plans for a side gig.
2. Head Count
8.2Aired 29 September 2021 • 42 min
A video of Casey from the roof rescue goes viral. Mouch sets up a Little Free Library at Firehouse 51. Herrmann breaks protocol.
3. Counting Your Breaths
7.8Aired 6 October 2021 • 42 min
Griffin learns the truth about his father’s death and reveals why he really came to visit Casey. Gallo, Ritter and Violet take steps to expand their microbrewery business.
4. The Right Thing
6.0Aired 13 October 2021 • 42 min
Kidd spreads her wings as a lieutenant. Chief Hawkins rides with Ambulance 61 to learn more about Brett. Casey takes a trip out of town. A Ritter date night turns into an emergency situation.
5. Two Hundred
8.2Aired 20 October 2021 • 42 min
Casey makes a life-altering decision. Gallo, Ritter and Violet agree to an interview and photo shoot. Brett and Mouch launch the paramedicine program. Cruz comes closer to fatherhood.
6. Dead Zone
8.2Aired 27 October 2021 • 41 min
A major security breach in the city’s computer networks forces Firehouse 51’s senior leaders to take matters into their own hands. Severide gears up for an arson investigation.
7. Whom Shall I Fear?
7.8Aired 3 November 2021 • 42 min
Gallo clashes with the new lieutenant temporarily filling in for Casey. Severide closes in on a dangerous and deadly arsonist.
8. What Happened at Whiskey Point?
8.4Aired 10 November 2021 • 42 min
Severide and Herrmann clash over office space. Boden looks at Pelham’s past as he considers making him permanent. Gallo’s resentment of Pelham comes to a head. Brett and Ritter force Violet to confront her true feelings for Gallo.
9. Winterfest
8.2Aired 8 December 2021 • 42 min
Gallo, Violet and Ritter debut their microbrewery business at Winterfest. Brett prepares to present her paramedicine program to an oversight panel. Firehouse 51 gets in the holiday spirit.
10. Back with a Bang
8.2Aired 5 January 2022 • 42 min
Stella Kidd returns to Firehouse 51. The team must work together to put out a potassium fire in a tunnel. After that incident, Ritter begins to worry about a young cop who witnessed the fiery death of a truck driver.
11. Fog of War
7.8Aired 12 January 2022 • 42 min
On a call with Station 37, a firefighter is struck by a power line and decides to lash out after her injury. Brett is visited by Scott and Amelia. Violet gets a surprise envelope. The rest of 51 enters a contest.
12. Show of Force
8.5Aired 19 January 2022 • 42 min
Boden, Kidd and Severide work together to protect one of their own. At the Fire Academy, Herrmann meets an inspiring young man. Talk of the annual CFD Gala dominates the firehouse.
13. Fire Cop
7.7Aired 23 February 2022 • 44 min
Severide and Seager team up to investigate a fire at the home of a troubled young woman. Pelham moves into 51's rumored cursed office. Kylie assists Kidd with Girls on Fire.
14. An Officer with Grit
8.3Aired 2 March 2022 • 41 min
Chief Hawkins goes above and beyond to help Brett and Violet with a problem. Kidd pursues an open lieutenant position. A blast from the past asks Mouch and Herrmann for a favor.
15. The Missing Piece
6.5Aired 9 March 2022 • 42 min
Following an injury in the aftermath of an industrial fire, Severide and Seager work together to investigate an anonymous tip. Kidd searches for the right person to fill the opening on Truck 81.
16. Hot and Fast
7.3Aired 16 March 2022 • 42 min
Cruz forms a bond with a young immigrant boy he meets while fighting an apartment fire. Squad makes plans to prank the newest member of their team.
17. Keep You Safe
8.0Aired 6 April 2022 • 42 min
Severide and Kidd work with CPD regarding a suspicious car wreck. Hawkins and Violet's relationship is in jeopardy. Chloe and Cruz adjust to a new family dynamic.
18. What's Inside You
8.0Aired 13 April 2022 • 41 min
Firehouse 51 must band together when one of their own is taken hostage.
19. Finish What You Started
8.5Aired 20 April 2022 • 42 min
Firehouse 51 tackles a fire caused by a dropped jet engine, and one of their own is accused of a theft related to the incident. Kidd and Boden disapprove of Kylie's potential new love interest.
20. Halfway to the Moon
7.8Aired 11 May 2022 • 42 min
A family friend asks Herrmann for some advice on opening a bar. Tensions run high between Emma and Violet. Kidd struggles to keep her team together.
21. Last Chance
8.5Aired 18 May 2022 • 42 min
Mouch and Ritter work together to solve a murder mystery. Severide and Cruz tackle a food truck fire. Gallo goes to see Hawkins about Violet.
22. The Magnificent City of Chicago
8.8Aired 25 May 2022 • 42 min
The big wedding day arrives and Firehouse 51 welcomes Casey back to celebrate the joyous occasion. Emma's plans to replace Violet come to a shocking end.