Chicago Fire

Lt. Casey, who is at the center of an undercover operation to bring down a trafficking ring run out of Nesbitt's strip club, finds himself in very dangerous territory. Meanwhile, as a result of the high turnover rate on squad, Severide gets a rude awakening when Capt. Dallas Patterson is brought in.

Members of the firehouse are frustrated with their inability to help Chief Boden, whose job is on the line pending an internal investigation in the aftermath of a complicated call to a fire. Meanwhile, Lt. Severide struggles to accept his smaller role and adjusts to the presence of Capt. Patterson (guest star Brian White), his new commanding officer. Dawson shakes things up.

The pressure on Firehouse 51 is at an all-time high as the internal affairs investigation into the handling of a recent fire picks up steam. Just when it appears that game-changing evidence comes to light that would serve to bail out Chief Boden, new twists emerge that put his head right back on the chopping block.

Firehouse 51 rallies around Casey as a pregnancy complication leaves Dawson's life in the balance. After key arson files go missing, Severide starts to have suspicions about Nick. Acting truck lieutenant Herrmann keeps the house spirit on track be setting 51 with the task of getting Molly's reopened before Dawson is out of danger.

After a fire ruins a neighborhood wedding, Boden (Eamonn Walker) steps up to host the ceremony at the firehouse. That's much to the chagrin of his boss, Chief Riddle (guest star Fredric Lehne), whose political aspirations have caused friction from within the firehouse.

Chief Boden (Eamonn Walker) meets his new neighbor (guest star Ilfenesh Hadera), who asks him for a favor that leads to serious consequences. Severide (Taylor Kinney) takes offense to being treated like a candidate by Captain Patterson (guest star Brian White) by undermining him during a call and the situation reaches a boiling point. Cruz (Joe Minoso) receives a surprise.

Chief Boden (Eamonn Walker) finds himself in the middle of a fiasco concerning a female neighbor (guest star Ilfenesh Hadera), who he believes is setting him up. Severide (Taylor Kinney), who is still on probation from his altercation with Captain Patterson (guest star Brian While), receives a surprise visit from his father (guest star Treat Williams.)

Chief Boden (Eamonn Walker) confronts Maddox (guest star Mark Hengst), believing he is the hand behind Serena's (guest star Ilfenesh Hadera) accusations intended to skew Boden's credibility from the approaching trial. Severide (Taylor Kinney) reaches out to Jamie (guest star Rachel Nichols), Maddox's lawyer, in an effort to help out and Capt. Patterson.

Members of Firehouse 51 are less than thrilled when Captain Patterson (guest star Brian White) steps in as replacement for Chief Boden (Eamonn Walker) while he deals with clearing his good name. Severide (Taylor Kinney) learns of the potential whereabouts of Serena (guest star Ilfenesh Hadera.)

Members of Firehouse 51 band together and anxiously await word at Chicago Med when one of their own falls victim to a life-threatening stabbing. Cruz (Joe Minoso) urgently works with members of Chicago P.D. to track down Freddie's (Ralph Rodriguez) whereabouts when he goes missing.

A tornado threatens the city and Herrmann (David Eigenberg) discovers the path may hit close to home. Chili (Dora Madison) and Brett (Kara Killmer) lock heads when Chili makes a critical mistake that leaves a victim breathless, prompting Brett to report to Chief Boden (Eamonn Walker) regarding Chili's erratic behavior.

Herrmann (David Eigenberg) goes to court to testify against Freddie (guest star Ralph Rodriguez), but when the perpetrator's father (guest star Ski Carr) reaches out to beg forgiveness for his son's malicious attack, a tormented Herrmann is left to figure out what to do.

The firehouse is on high alert when mysterious threats begin to emerge throughout Chicago. The situation turns dire when news of a mass shooting brings members of squad and truck into the middle of a dangerous and harrowing scene. Lt. Casey (Jesse Spencer) works diligently to investigate the missing money from the fundraiser for the victims of the recent tornado.

Lt. Severide (Taylor Kinney) confronts Chili (Dora Madison) about his suspicions regarding her erratic behavior, but she does not take too kindly to his intentions. Meanwhile, members of the firehouse rally around Lt. Casey (Jesse Spencer), who they believe is a perfect candidate to run for the position as Alderman and Jimmy (Steven R. McQueen) faces off against Antonio.

Firehouse 51 responds to an odd call from a neighboring firehouse and the unusual circumstances prompt Severide (Taylor Kinney) and Cruz (Joe Minoso) to take the investigation into their own hands to search out the real story. The truck welcomes new firefighter Stella Kidd (guest star Miranda Rae Mayo), but her addition has repercussion inside the firehouse.

Casey (Jesse Spencer) continues his run for alderman, but a citywide propaganda attack against his campaign makes him reconsider his candidacy. The rescue squad is summoned to the scene of a man trapped inside of a burning car with suspicious evidence suggesting that that the fire may have been intentionally set. Mouch's (Christian Stolte) upcoming bachelor party looms.

While responding to a potential carbon monoxide leak inside a home, Lt. Severide (Taylor Kinney) and Cruz (Joe Minoso) uncover the remains of a child inside the chimney. Subsequent information leads Severide to believe that the discovery may be linked to a case he had worked on years ago.

While responding to a call involving a victim incapacitated with a leg wound, Sylvie Brett (Kara Killmer) witnesses a murder and is threatened by the shooter not to go to the police. Unsure of what to do, she tries to track down Antonio (guest star Jon Seda) from Chicago PD. Elsewhere, Firehouse 51 jumps into action when a fire breaks out inside a restaurant.

When a high school student becomes an innocent victim of a gang retribution incident, a very determined Lt. Casey (Jesse Spencer) tries all means necessary to resolve the issue. Severide (Taylor Kinney) lends a hand to Detective Holloway (guest star Jenny Mollen), who is working a dangerous undercover investigation, and watches over her 9-year-old son at the firehouse.

Detective Holloway (guest star Jenny Mollen) continues to entrust Lt. Severide (Taylor Kinney) to watch over her young son at the firehouse while she testifies in court as part of an undercover operation. When the situation takes an unexpected turn, Severide is left to deal with the aftermath. The firehouse responds to a blaze at an art gallery.

Dawson (Monica Raymund) makes an attachment to a young boy she rescues in an apartment blaze while Kidd's (guest star Miranda Rae Mayo) big idea for Molly's turns into a disaster. Lt. Severide (Taylor Kinney) makes a pitch for the house to upgrade some of their fire masks but hits a wall in his efforts, prompting Lt. Casey (Jesse Spencer) to use his political influence.

Truck and squad are called to the scene of a building collapse that has trapped more than a dozen victims inside of the rubble. With the structure ready to give way and not much time to react, Chief Boden (Eamonn Walker) faces a difficult decision with life-and-death ramifications.

Lt. Boden (Eamonn Walker) and Jimmy (Steven R. McQueen) find themselves at odds in dealing with the aftermath of recent events while Kidd (guest star Miranda Rae Mayo) is forced to deal with her unstable and volatile ex, Grant (guest star Guy Burnet). With the help of firehouse 51, Dawson (Monica Raymund) tries to put her best foot forward in her pursuit for fostering Louie.