8.4/10590 votes#1 - Let It Burn
Season 4 Episode 1 - Aired 10/13/2015
Casey is placed in a dangerous situation while working undercover to bring down a trafficking ring being run out of Nesbitt's club. The squad's high turnover rate results in an unwelcome surprise for Severide. Dawson recognizes that her life is about to change. A new candidate makes an unusual first impression. Residents band together to protest a drug den in their neighborhood.
Director: Joe Chappelle
Writer: Michael Gilvary, Andrea Newman
8.1/10519 votes#2 - A Taste of Panama City
Season 4 Episode 2 - Aired 10/20/2015
Boden's job is on the line pending an internal investigation. Severide adjusts to Patterson, his new commanding officer. Dawson shakes things up at the work. Casey searches for important evidence in his investigation of Nesbitt. Herrmann tries to keep the peace with Molly's new neighbors.
Director: Sanford Bookstaver
Writer: Tiller Russell
8.1/10514 votes#3 - I Walk Away
Season 4 Episode 3 - Aired 10/27/2015
Evidence that seems to exonerate Boden may not be enough. Brett and Chili find themselves in a precarious situation. The team responds to a stuck elevator in a hotel. Jimmy Borrelli's older brother wants him transferred to a different house.
Director: Tom DiCillo
Writer: Sarah Kucserka, Veronica West
8.6/10551 votes#4 - Your Day Is Coming
Season 4 Episode 4 - Aired 11/3/2015
The squad members come together to support one of their own. Herrmann tries to figure out how to reopen Molly's after it gets shut down. Severide digs deep into the arson investigation.
Director: Reza Tabrizi
Writer: Jill Weinberger
7.9/10515 votes#5 - Regarding This Wedding
Season 4 Episode 5 - Aired 11/10/2015
Boden offers to host a wedding at the firehouse after a fire destroys the original location, but it doesn't sit well with Chief Riddle, who also butts heads with Dawson over her ability to perform. Severide fights for his old position. Capt. Patterson finds himself torn between leadership and his colleagues.
Director: Joe Chappelle
Writer: Michael A. O'Shea
7.9/10523 votes#6 - 2112
Season 4 Episode 6 - Aired 11/17/2015
Boden's new neighbor asks him for a favor that could have serious repercussions. Severide is upset when he's treated like a candidate by Patterson. Cruz is visited by a gangbanger who knows his brother. The team responds to a call that involves an 18-wheeler; and is thanked with tickets to see Rush.
Director: Holly Dale
Writer: Ian McCulloch
8.3/10502 votes#7 - Sharp Elbows
Season 4 Episode 7 - Aired 11/24/2015
Boden suspects his neighbor is setting him up; Severide, who's still on probation, receives a surprise visit from his father and also learns something about Patterson that could be a game changer. Romance blossoms at a fire department gala.
Director: Dan Lerner
Writer: Tiller Russell, Liz Alper, Ally Seibert
8.0/10498 votes#8 - When Tortoises Fly
Season 4 Episode 8 - Aired 12/1/2015
Boden believes Maddox is behind Serena's accusations. Severide reaches out to Jamie, who's Maddox's lawyer, in an attempt to help. Patterson questions whether Boden can remain chief. Brett and Chili suspect that a man passed out in a garden is connected to a previous call. Otis has problems with his social calendar.
Director: Haze J.F. Bergeron III
Writer: Michael Gilvary
8.6/10531 votes#9 - Short and Fat
Season 4 Episode 9 - Aired 12/8/2015
Patterson fills in for Boden, who's trying to clear his name. Severide learns where Serena may be hiding. Herrmann and Otis give Freddie a job that keeps him close by. Jimmy and Chili draw more attention then either bargained for.
Director: Joe Chappelle
Writer: Michael Brandt, Derek Haas
8.4/10554 votes#10 - The Beating Heart (I)
Season 4 Episode 10 - Aired 1/5/2016
Herrmann fights for his life after being stabbed; Cruz hits the streets to find Freddie. Mouch proposes to Trudy. The crossover continues on Chicago Med S01E05 Malignant (II) and Chicago P.D. S03E10 Now I'm God (III).
Director: Reza Tabrizi
Writer: Andrea Newman
7.9/10511 votes#11 - The Path of Destruction
Season 4 Episode 11 - Aired 1/19/2016
A tornado threatens Chicago. Chili makes a major mistake, which causes Brett to report her to Boden. Otis asks Dawson to help him solve his women troubles. Severide assists a Department of Homeland Security agent.
Director: Dru Anne Carlson
Writer: Sarah Kucserka, Veronica West
8.0/10494 votes#12 - Not Everyone Makes It
Season 4 Episode 12 - Aired 1/26/2016
Freddie's father begs Herrmann to forgive his son's assault. Casey discovers that a makeshift shelter housing people displaced by the tornado may close. Casey attends a fund-raiser at the request of an alderman. Dawson and Brett experience repercussions after telling Boden about Chili's erratic behavior.
Director: Reza Tabrizi
Writer: Tiller Russell
8.8/10591 votes#13 - The Sky Is Falling
Season 4 Episode 13 - Aired 2/2/2016
The team responds to a mass shooting; Casey investigates the missing money from the fund-raiser. Jimmy agrees to represent the firehouse in a boxing match against the Chicago PD's 21st District. Chili's behavior continues to be an issue for Brett.
Director: Joe Chappelle
Writer: Michael Brandt, Michael A. O'Shea
8.0/10494 votes#14 - All Hard Parts
Season 4 Episode 14 - Aired 2/9/2016
Severide confronts Chili about her erratic behavior. Members of the firehouse rally around Casey, who they think would make a great candidate for alderman. Jimmy squares off against Antonio in the first annual "Battle of the Badges" boxing match.
Director: Sanford Bookstaver
Writer: Jill Weinberger
8.0/10490 votes#15 - Bad for the Soul
Season 4 Episode 15 - Aired 2/16/2016
The team responds to a suspicious call from a neighboring firehouse; and welcomes a new firefighter, though her addition has repercussions. Casey moves forward in his run for alderman.
Director: Jann Turner
Writer: Michael Gilvary, Andrea Newman
8.0/10481 votes#16 - Two Ts
Season 4 Episode 16 - Aired 2/23/2016
Casey reconsiders his run for alderman after he's targeted by a propaganda campaign. The squad responds when a man is trapped inside of a burning car. Trudy's nerdy brother plans Mouch's bachelor party. Jimmy and Brett investigate a kidnapping on their own.
Director: Reza Tabrizi
Writer: Derek Haas, Ian McCulloch
8.3/10485 votes#17 - What Happened to Courtney
Season 4 Episode 17 - Aired 3/29/2016
Severide and Cruz find a child's remains inside a chimney while investigating a possible carbon monoxide leak inside a home. In other events, Casey braces for the worst in his run for alderman while Alderman Becks continues to bad mouth him to the press.
Director: Jeffrey G. Hunt
Writer: Matt Olmstead, Liz Alper, Ally Seibert
8.1/10486 votes#18 - On the Warpath
Season 4 Episode 18 - Aired 4/5/2016
Sylvie witnesses a murder and is threatened by the shooter not to go to the police. Firehouse 51 jumps into action when a fire breaks out at a restaurant and traps several people inside a vault. Mouch starts to get cold feet.
Director: Joe Chappelle
Writer: Sarah Kucserka, Veronica West
8.2/10492 votes#19 - I Will Be Walking
Season 4 Episode 19 - Aired 4/19/2016
Casey steps up to help a teenager being bullied by a gang; Severide bonds with a detective’s son after her life is threatened; and Kidd and Herrmann go head-to-head in a test of bar knowledge.
Director: Sanford Bookstaver
Writer: Tiller Russell
8.9/10588 votes#20 - The Last One for Mom
Season 4 Episode 20 - Aired 4/26/2016
Firehouse 51 unites to help a young boy in tragic circumstances. A high-powered political consultant helps Casey navigate a potential scandal. Cruz makes a mistake that nearly costs him his life.
Director: Fred Berner
Writer: N/A
8.1/10475 votes#21 - Kind of a Crazy Idea
Season 4 Episode 21 - Aired 5/3/2016
Dawson saves a young boy from an apartment fire. Kidd's idea for Molly's doesn't go as hoped. Severide hits a wall while advocating for new fire masks. Cruz and Brett utilize a secret weapon to get Otis to see Dr. Halstead take a blood test.
Director: Joe Chappelle
Writer: Michael Gilvary, Andrea Newman
8.3/10475 votes#22 - Where the Collapse Started
Season 4 Episode 22 - Aired 5/10/2016
The team responds to a building collapse that's trapped more than a dozen people. Dawson's quest to foster Louie is aided by a familiar face. Otis, who's on medical leave, meets his temporary replacement. Severide and Kidd continue to see each other. Casey is at odds with Antonio.
Director: Sanford Bookstaver
Writer: Sarah Kucserka, Veronica West
8.5/10505 votes#23 - Superhero
Season 4 Episode 23 - Aired 5/17/2016
Boden and Jimmy are at odds. Kidd deals with her unstable ex. Dawson continues her quest to foster Louie. Casey's new political consultant urges him to think big. The team responds to a dangerous structure fire.
Director: Michael Brandt
Writer: N/A
The Best Episodes of Chicago Fire Season 4
Every episode of Chicago Fire Season 4 ranked from best to worst. Discover the Best Episodes of Chicago Fire Season 4!
An edge-of-your-seat view into the lives of everyday heroes committed to one of America's noblest professions. For the firefighters, rescue squad and paramedics of Chicago...
Genre:Drama
Network:NBC
Season 4 Ratings Summary
"Let It Burn" is the best rated episode of "Chicago Fire" season 4. It scored 8.4/10 based on 590 votes. Directed by Joe Chappelle and written by Michael Gilvary, Andrea Newman, it aired on 10/13/2015. This episode is rated 0.3 points higher than the second-best, "A Taste of Panama City".