The crossover starts on Chicago Fire S13E11 In the Trenches (I) and Chicago Med S10E11 In the Trenches (II).

There's a shift in show order for the crossover event. “Chicago Fire” will air first at 8 p.m., followed by “ Chicago Med “ at 9 p.m., with “ Chicago P.D .” concluding the event at 10 p.m.

After a mid-season break, Chicago Fire is finally back ... Brett and joined the series back in season 3. Speaking about her final episode in season 12, Killmer told Deadline: “This is the ...