Unlike the other crossover episodes included on this list, "The Flash's" installment of "Crisis on Infinite Earths" is a bit hard to process on its own. The episode picks up and interweaves several ...

The shows 2nd major crossover second is set for December 1 and 2, and will launch the midseason spinoff "DC’s Legends of Tomorrow." "In its second major crossover event with “Arrow,” Vandal Savage ...