One Chicago Crossover Brings Back Halstead and Upton

Jesse Lee Soffer and Tracy Spiridakos reprise their roles as the fan-favorite couple in the three-show event.

Published on Feb. 26, 2026

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The hit One Chicago franchise is gearing up for a major three-show crossover event on March 4, featuring the return of former Chicago P.D. stars Jesse Lee Soffer and Tracy Spiridakos as Jay Halstead and Hailey Upton. Hailey is now with the FBI, while Jay is working drug interdiction for the U.S. Army, and the crossover will explore how their relationship and dynamics have changed since their last appearances. The event kicks off with a plane emergency on Chicago Fire before continuing on Chicago Med and concluding on Chicago P.D., where the first responders face a bigger, deadlier mystery that could put many in jeopardy.

Why it matters

The return of Halstead and Upton, a beloved couple on the One Chicago shows, is a major event for fans who have been waiting to see how their story continues. The crossover promises high-stakes action and character-driven drama as the first responders across the three shows come together to solve a complex mystery.

The details

In the crossover, Hailey is now working for the FBI, while Jay is with the U.S. Army's drug interdiction unit. The two will have to navigate their changed relationship and dynamics as they work alongside the Chicago P.D., Fire, and Med teams to investigate a plane emergency that leads to a bigger, more dangerous mystery. The action is described as "epic in scope" while also being the "most character-driven crossover" the franchise has done, delving deep into the histories of the main characters.

  • The One Chicago crossover event will air on March 4, 2026.
  • Jesse Lee Soffer exited Chicago P.D. in 2022, while Tracy Spiridakos left the show in 2024.

The players

Jesse Lee Soffer

An American actor best known for his role as Jay Halstead on the NBC drama series Chicago P.D., which he starred in from 2014 to 2022.

Tracy Spiridakos

A Canadian actress who portrayed Hailey Upton on Chicago P.D. from 2017 to 2024, when her character left the show to join the FBI.

Gwen Sigan

The executive producer of Chicago P.D.

Andrea Newman

The executive producer of Chicago Fire.

Allen MacDonald

The executive producer of Chicago Med.

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What they’re saying

“It was especially gratifying having them return, to see how the dynamics between them have changed and also getting to see their point of view of our unit, of Voight [Jason Beghe], of our new characters, and how much we've changed, too.”

— Gwen Sigan, Executive Producer, Chicago P.D. (tvinsider.com)

“We've never attacked anything as big as this plane incident before. The action is epic in scope, and yet at the same time, it's the most character-driven crossover we've ever done, really tapping deep into the history of the main characters of the One Chicago world with the central mystery.”

— Andrea Newman, Executive Producer, Chicago Fire (tvinsider.com)

“These are front-liners, so absolutely, they are in danger from the jump.”

— Andrea Newman, Executive Producer, Chicago Fire (tvinsider.com)

What’s next

The One Chicago crossover event will air on NBC on March 4, 2026, with Chicago Fire leading into Chicago Med and concluding on Chicago P.D.

The takeaway

The return of fan-favorite characters Jay Halstead and Hailey Upton, along with the promise of high-stakes action and deep character exploration, make the upcoming One Chicago crossover a must-watch event for fans of the franchise.