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 to return him home.
Stars: Melissa Benoist, Mehcad Brooks, Chyler Leigh
Director(s): Jerry Siegel, Joe Shuster
Writer(s): Jerry Siegel, Joe Shuster
Genres: Action,Adventure,Drama,Sci-Fi