Two new Supergirl and The Flash crossover teasers have dropped.   https://www.youtube.com/watch?v=ObBVYoJY-dA   https://www.youtube.com/watch?v=kUHoHBfiJUA     Official Synopsis Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way... Continue Reading →