News TV Videos ‘Chicago Fire’ and ‘Chicago P.D.’ crossover event preview Written by Lena Lamoray on January 3, 2017 Tonight at 9/8c on NBC, don’t miss the two-hour crossover event. A shocking crime could put one of their own behind bars. Related posts:'Chicago Fire' previews and digital exclusiveCheck out The Filharmonic's cover of "Uptown Funk"'Grimm' previews