Don't miss the "Crisis on Earth-X" Crossover Event Nov 27 & 28!
"Crisis on Earth-X" is the fourth annual cross-over event, from these CW Series - Supergirl, Arrow, The Flash, and Legends of Tomorrow. The crossover will begin on November 27, 2017 with Supergirl and Arrow, and conclude on November 28 with The Flash and Legends of Tomorrow.