Sneak Peek footage, images and synopsis from the upcoming "Supergirl" crossover event including 'Green Arrow', 'The Flash', 'Supergirl' and 'Legends Of Tomorrow', written by Aaron Helbing, Todd Helbing and directed by Dermott Downs, airing November 28, 2016 on The CW:
Click the images to enlarge and Sneak Peek the "Supergirl" Cross-Over Event...
