Sparks will definitely fly after Halstead (Jesse Lee Soffer) and Upton (Tracy Spiridakos) are thrown back together during a citywide emergency.
Watch the One Chicago Crossover Event Wednesday, March 4 starting at 8/7c on NBC and next day on Peacock.
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Halstead and javonte green Upton Are BACK | One tucson weather Chicago Crossover Event | NBC
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