The worlds of Chicago Med, Chicago Fire and Chicago P.D. are set to collide in an epic One Chicago crossover — and no one is safe.
Chicago P.D. showrunner Gwen Sigan exclusively told Us Weekly on Tuesday, March 3, that unlike crossovers past, the Wednesday, March 4, mashup will focus on one incident that “continues throughout the three hours.”
As a result, “You see pieces keep coming back, and characters keep coming back. So everyone’s very intertwined,” Sigan explained.
She teased that interagency connection “makes it so that all three shows have multiple people that are in very high-stakes scenarios through the whole thing.”
Chicago Fire showrunner Andrea Newman added that the shows are all “very integrated this time” making it feel like “a movie more than three separate shows going one after the other.”
Chicago Med showrunner Allen MacDonald agreed, telling Us that there will be “pairings of those characters that maybe we haven’t seen before,” which he called “exciting.”

Hanako Greensmith as Violet Mikami, Jocelyn Hudon as Lyla Novak. Peter Gordon/NBC
Wednesday’s action-packed crossover called “Reckoning, Part I, Part II and Part III” will kick off with Chicago Fire’s Firehouse 51 being “called to an airfield when a passenger jet suddenly goes silent mid-air, triggering a high-stakes emergency,” according to the logline.
“Their discovery cracks open a bigger and deadlier mystery — one with consequences that could put countless lives in jeopardy,” NBC teased, noting that along the way Chicago P.D. alum Hailey Upton (Tracy Spiridakos), who is now an FBI agent, will find herself back in Chicago and assisting with the case.
As the three-part episode enters hour two, Chicago Med’s doctors are “thrust into a race against time as they work to unravel a baffling medical mystery linked to the passenger jet, while lives hang in the balance,” per the logline.
While the doctors do their best to save multiple lives — some of which are among the first responders fans know and love — Chicago P.D.’s Intelligence Unit and former detective Jay Halstead (Jesse Lee Soffer) are in “a high-stakes pursuit of the culprit, all under the sharp eye of the FBI,” NBC said.

Sarah Ramos as Dr. Caitlin Lenox, Tracy Spiridakos as Hailey Upton. George Burns Jr/NBC
Along the way, viewers will learn more about Chief Dom Pascal’s (Dermot Mulroney) past connection to Sergeant Hank Voight (Jason Beghe) and whether it has anything to do with the explosive case.
“When they met last year for the first time in the crossover, it was kind of this epic moment. They had a connection that we just felt right off the bat,” Newman told Us of Pascal and Voight’s elusive bond. “And we wanted to explore that a little bit more. And we thought it would be really interesting if they had this shared experience from the past.”
Sigan explained to Us that it “felt pretty natural” to bring the two leaders together and throw in Chicago Med’s Sharon Goodwin (S. Epatha Merkerson) into the mix for an added layer of intrigue.
“It felt like, ‘Of course, they’ve met previously. Of course, they’ve had all these connections.’ Because they all work in this one city together that they would cross paths,” Sigan mused. “You just imagine, yeah, they have this history together, and these decades of story that we haven’t really gotten to explore yet.”
One Chicago’s crossover event begins on NBC Wednesday, March 4, at 8 p.m. ET, followed by part II and part III at 9 p.m. ET and 10 p.m. ET.


