Chicago en llamas

Firehouse 51 deals with the longterm collateral damage from the deadly warehouse fire on the season six premiere.

Things get personal when Boden demands justice for the school fire.

Lt. Casey gets off on the wrong foot with Sam Mullins, a temporary Chief who is filling in for Boden at House 51 for the morning. When Casey later makes a risky move in an attempt to save a distraught man from jumping off a building, Mullins has a surprise that Casey does not expect. Mouch flies in Cruz's brother Leon as a birthday surprise, but the rest of the squad struggles to keep it a sec...

While running a secret errand, Dawson finds herself trapped in a collapsed parking structure. With all paths of exit blocked, she is forced to improvise and works double-duty to keep a number of injured individuals alive while trying to maintain peace among those trapped. Meanwhile, pressure is mounting on Casey as he begins to take on additional duties, Kidd grows increasingly skeptical of Ho...

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...

After heroically saving a mother and newborn baby from a rooftop fire, Kidd receives surprising news when she discovers she is being transferred out of the firehouse. Severide and Casey believe something is off about the turn of events, prompting them to investigate the situation. Otis and Herrmann discuss the possibilities of taking over a rundown bar and Dawson's frustration with her father,...

Mollys's North gets ready to open its doors.

Dawson deals with the aftermath of the clinic fire.

After learning unsettling news, Dawson enlists Severide to help her out. Elsewhere, Casey and Dawson struggle with communication issues while Brett and Kidd compete to win the heart of Zach, a Hazmat officer. Meanwhile, Otis, Herrmann and Mouch are on a mission to locate the source of a horrible stench that is making life unpleasant at Firehouse 51.

Dawson (Monica Raymund) and Casey (Jesse Spencer) do everything they can to locate Bria's (guest star Quinn Cooke) whereabouts after discovering important new information. Lt. Severide (Taylor Kinney) reunites with Chief Grissom (guest star Gary Cole), and old family friend. Meanwhile, Cruz (Joe Minoso) enlists the help of Brett (Kara Killmer) and Mouch (Christian Stolte) to create a new tool ...

The friendship between Casey and Severide continues to be tested.

Casey and Severide reluctantly become the subjects of a day in the life photo spread.

CPD enlists the help of Firehouse 51 for a dangerous undercover mission.

A domineering husband answers for his injured wife after Casey and Dawson respond to a car accident.

Otis and Kidd respond to a call involving a residential fire only to head into danger when gunfire goes off in the house.

Herrmann, along with members of house 51, struggle to come to terms with an injury to one of their own, and then must deal with the new temporary replacement. Boden ponders some interesting news while Kidd has a hard time keeping a secret.

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.

When the FBI takes over Firehouse 51 for an undercover mission, Casey and Severide volunteer to assist with the investigation. Kidd attempts to help Severide come to terms with recent developments he's been managing.

After responding to a residential fire at a property belonging to a Mexican drug cartel, Casey is skeptical of Cordova (guest star Damon Dayoub) after a hefty amount of money was found missing from the crime scene.

After saving a girl from a car accident, Chief Boden and Lt. Severide are taken aback when they receive a surprise package.

Lt. Severide is shocked when Rene Royce (guest star Sarah Shahi) resurfaces at the firehouse. Casey comes up with a plan to help Chief Boden in his latest pursuit.

Boden takes a big step in the pursuit of a major career decision. Kidd becomes increasingly distrustful of Renee's (guest star Sarah Shahi) motives with Severide.

Boden's chances for a promotion are met with potential complications, leading him to take matters into his own hands.