Disaster hits close to home, and Firehouse 51 must rebuild physically and emotionally. Amidst crisis and chaos, the firefighters continue to prove their courage and resilience.
All episodes — Season 8
S8 E1Sacred Ground
Sep 25, 20198.942 min
The mattress factory fire spirals out of control. Truck and squad lay it on the line in hopes of getting the trapped victims out alive.
S8 E2A Real Shot in the Arm
Oct 2, 20197.942 min
Lt. Casey struggles to get Chief Boden to sign off on an energetic new recruit. Against her better judgment, Foster extends an olive branch to her irritating new medic. Otis inspires Herrmann to seek new partners at Molly’s. Brett realizes
S8 E3Badlands
Oct 9, 20198.242 min
Brett and Foster question the suspicious circumstances surrounding a brutal attack at a juvenile detention center, which leaves them searching for the truth. A convoluted new technology installed inside Firehouse 51 tests everybody’s patien
S8 E4Infection (I)
Oct 16, 20198.841 min
A rare but deadly bacteria takes its toll on numerous victims around the city, leaving Chicago’s finest first responders to work together alongside the CDC to resolve the dangerous situation. Following a fire at a local university that ties
S8 E5Buckle Up
Oct 23, 20197.442 min
Kidd must prove herself at the National Firefighter Leadership Conference while the rest of Firehouse 51 is called to two eerily similar car wrecks. Mouch tries to keep everyone in the firehouse informed by starting a newsletter, but things
S8 E6What Went Wrong
Oct 30, 20197.442 min
Cruz and Severide suspect foul play when a fire started by an elderly woman turns deadly. Kidd, Foster and Brett create a women’s-only lounge. Firehouse 51 celebrates some good news.
S8 E7Welcome to Crazytown
Nov 6, 20197.942 min
Severide must make a tough decision about the future of his career at Firehouse 51. Herrmann deals with the consequences of his temper. Cruz is excited to demonstrate the Slamigan at the Firefighting Expo. Commissioner Grissom returns.
S8 E8Seeing Is Believing
Nov 13, 2019842 min
Severide begins his assignment at the Office of Fire Investigation and gets off on the wrong foot when, despite his orders, he reopens an old case. When the cause of an apartment fire hits close to home, Herrmann is on a mission to get to t
S8 E9Best Friend Magic
Nov 20, 20197.742 min
An unexpected visit throws Casey for a loop. Severide sets out to exonerate a wrongly convicted arsonist. Kidd pays the price for burning the candle at both ends. Cruz goes on a mission to fix one of Otis’s old toys.
S8 E10Hold Our Ground
Jan 8, 20207.342 min
Members of Firehouse 51 are dismayed to learn their boundaries have been redrawn to overlap with an adjacent station and problems quickly arise. Casey and Gallo hunt a missing piece of equipment. Brett and Foster find themselves at odds. Mo
S8 E11Where We End Up
Jan 15, 20208.242 min
A pest control problem forces the 51 team to temporarily bunk with Firehouse 20. All under the same roof, Casey clashes with Capt. Delaney while Foster, Kidd and Brett fear Capt. Leone has it out for them. Boden mulls a procedural overhaul.
S8 E12Then Nick Porter Happened
Jan 22, 20207.742 min
A series of false alarms at a private school hinders the firehouse's ability to respond to legitimate emergency calls. Kidd asks for ideas to surprise Severide on his birthday. Cruz and Brett rent out their extra room, but the new tenant is
S8 E13A Chicago Welcome
Feb 5, 20208.342 min
The surprising arrival of a new fire truck brings both joy and chaos to members of Firehouse 51. Boden and Severide are asked to make peace with an old foe for the greater good. Brett receives family news while Foster plans a party with fri
S8 E14Shut It Down
Feb 12, 20207.842 min
A series of mysterious gas leaks has members of Firehouse 51 puzzled and spread thin. Brett’s conflicted when her birth mother gets serious about tracking her down. Severide misunderstands his role as Cruz’s best man. Mouch bites off more t
S8 E15Off the Grid (I)
Feb 26, 20207.542 min
A series of teen opioid overdoses sees Severide partner with Sean Roman, but begins to suspect there’s more to the story than his old friend is telling him. Casey tries to be there for Brett as she considers her birth mother’s offer to meet
S8 E16The Tendency of a Drowning Victim
Mar 4, 20207.642 min
Boden is on edge after starting a new fad diet. Casey and Severide disagree on a call. Brett’s birth mother shares life-altering news. A familiar face has a proposition for Herrmann.
S8 E17Protect a Child
Mar 18, 20207.642 min
Things get personal for Casey and Gallo in the aftermath of a suburban house fire involving a mother and her young son. Herrmann campaigns for more respect. Kidd has an idea for giving back to her community.
S8 E18I'll Cover You
Mar 25, 20207.842 min
Lt. Severide teams up with Seager and the OFI when a motel structure fire turns suspicious. Firehouse 51 members become amateur sleuths following a Reddit post involving one of their own. Brett continues to get invested in her birth mother,
S8 E19Light Things Up
Apr 8, 20207.742 min
Tension builds when a group of rabble-rousers attempt to lock down the firehouse. Brett is faced with a monumental decision. Cruz readies himself for a big day. Gallo and Ritter attempt to launch Firehouse 51 into the social media age.
S8 E2051's Original Bell
Apr 15, 20208.141 min
When one of 51's own gets injured on a call, Lt. Severide becomes obsessed with helping out. Foster contemplates a big decision. Kidd is concerned for one of her high school trainees.