NBC’s One Chicago franchise welcomes its fourth series March 1 with a three-hour crossover ending in a special preview of Chicago Justice.

Cast members and executive producer Dick Wolf talk about the impact of the four-show franchise in the video here. 

“Chicago Fire” kicks off the event, airing on a special night and time. “Chicago P.D.” follows, airing an hour earlier than normal. NBC then offers up a preview of “Justice,” which settles into its regular night at 9/8c Sunday, March 5.

And fear not, “Chicago Med” fans. Your favorite doctors and nurses will appear in all three hours of the crossover.

The crossover follows Firehouse 51 fighting a harrowing warehouse fire that seriously injures Det. Olinsky’s daughter and the investigation to find the arsonist. When the suspect goes to trial, his high-powered attorney tries every trick in the book to get him acquitted.

Read more about the crossover event below, with the date and times each episode airs. And if you want to get a little taste of a four-show crossover, check out my “Chicago P.D.” preview story at the Chicago Sun-Times.

More One Chicago

Philip Winchester builds new muscles in Chicago Justice

Eamonn Walker praises One Chicago family

LaRoyce Hawkins gets Chicago Justice closeup

One Chicago crossover event

One Chicago

Dawson (Monica Raymund) and Mouch (Christian Stolte) help a victim in March 1 One Chicago crossover event. (Elizabeth Morris/NBC)

Chicago Fire

“Deathtrap,” 8/7c March 1

Truck and squad are called to aid in a massive all-city response when countless victims are trapped by a blaze. An old, ill-equipped factory-turned-live/work space quickly turns into a firestorm. The dire situation becomes personal when it is discovered that one of Chicago PD’s own has a family member at the scene. With the rescued victims in need of serious medical attention, the doctors and nurses of Chicago Med are tested as the major influx of patients are brought through their doors. In the aftermath, the building owner steps forward to cooperate with the ongoing investigation, but the situation takes a sudden and unexpected turn.

“Fire” cast: Jesse Spencer, Taylor Kinney, Eamonn Walker, Monica Raymund, Kara Killmer, David Eigenberg, Miranda Rae Mayo, Yuri Sardarov, Joe Minoso and Christian Stolte star. Charlotte Sullivan guest stars.

Crossover cast: S. Epatha Merkerson, Oliver Platt, Marlyne Barrett, Yaya DaCosta, Brian Tee, Colin Donnell, Nick Gehlfuss, Torrey DeVitto from “Chicago Med.” Jason Beghe, Sophia Bush, Marina Squerciati, Elias Koteas from “Chicago P.D.” Carl Weathers from “Chicago Justice.”

Chicago P.D.

“Emotional Proximity,” 9/8c March 1

Olinsky’s daughter remains in critical condition following a massive fire—leaving Intelligence on edge, but more determined than ever to track down the suspect. Voight opens up the case, knowing that he has Assistant State’s Attorney Peter Stone and his team’s full support in the investigation, and all of Firehouse 51 behind him to examine potential origins of the fire. Intelligence works to connect the dots between the building owner, those who were inside, and a string of potential suspects.

“P.D.” cast: Elias Koteas, Jason Beghe, Jesse Lee Soffer, Sophia Bush, Patrick John Flueger, Marina Squerciati, LaRoyce Hawkins and Amy Morton star. Melissa Carlson guest stars.

Crossover cast: Taylor Kinney and Eamonn Walker from “Chicago Fire.” Philip Winchester and Jon Seda from “Chicago Justice.” Nick Gehlfuss, Torrey DeVitto and Marlyne Barrett from “Chicago Med.”

One Chicago

ADAs Peter Stone (Philip Winchester) and Anna Valdez (Monica Barbaro) in court. (Parrish Lewis/NBC)

Chicago Justice

“Fake,” 10/9c March 1

Firehouse 51 responded to a horrific warehouse fire that killed 39 people. This led the Chicago P.D. on a manhunt for the suspect. Now with someone in custody for both arson and multiple murders, ADA Peter Stone gets to work. He and his team, including lead investigator Antonio Dawson, work to bring some peace and resolution to the many families and friends of those lost—including one very close to home. That’s when they face a hotshot attorney (guest star Bradley Whitford) with tricks up his sleeve. A dicey confession, incriminating evidence and a questionable motive also could derail their case.

“Justice” cast: Philip Winchester, Jon Seda, Carl Weathers, Joelle Carter and Monica Barbaro

Crossover cast: Elias Koteas and Jason Beghe from “Chicago P.D.” Taylor Kinney from “Chicago Fire.”

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