Chicago P.D. showrunner Gwen Sigan explains the return of Jay Halstead and Hailey Upton in the One Chicago crossover event ...

Fans of Chicago P.D. finally saw Hailey Upton, played by Tracy Spiridakos, and Jay Halstead, played by Jesse Lee Soffer, ...

'Chicago P.D.' alums Tracy Spiridakos and Jesse Lee Soffer returned for the special episodes and open up to PEOPLE about ...

The latest "One Chicago" crossover brings back ex-spouses Upton and Halstead, but is there any chance that the pair will ...

Last year's One Chicago crossover, "In the Trenches," stands as one of — if not the best — of the highly popular, not-frequent-enough events in the franchise's history. NBC is going back to the well ...

The One Chicago Crossover concludes on Chicago PD Season 13 Episode 13 with Voight , Intelligence, Hailey, and Jay reckoning ...