Over the years, Chicago Fire, Chicago P.D., and Chicago Med have delivered some of the most exciting crossover events on network television. From massive multi-episode emergencies to character-driven investigations, the One Chicago franchise has turned crossovers into an annual tradition — and a fan-favorite spectacle.
So far, the universe has aired more than a dozen major crossover events, ranging from two-show specials to ambitious three-part storylines. Highlights include the 2014 introduction of Chicago P.D., the high-stakes 2016 warehouse fire arc, and the emotional 2019 infection crisis that linked all three shows.
Each crossover blends action, heart, and seamless teamwork across the interconnected departments of Firehouse 51, Chicago Med, and the CPD Intelligence Unit. Even with cast changes over the years, these events remain some of the most memorable hours in the franchise — proving that One Chicago is at its best when everyone joins forces.
