The promo certainly has the characters mingling with each other, to the point that Chicago Med showrunner Allen MacDonald was ...

Chicago Fire, Chicago P.D., and Chicago Med are all coming together for the first time in five years for a crossover ...

The much-anticipated One Chicago crossover is set to shake things up for several beloved characters, but none more so than ...

Chicago Fire showrunner Andrea Newman has offered a brief tease of what's to come in the One Chicago crossover.