CBS' Supergirl: The Flash Crossover - 'World's Finest'
Reported by Outsiders - 2016.03.23
Check out a new promo for the episode titled "Worlds Finest," which will have Barry Allen (Grant Gustin) entering a new alternate universe just in time to help Kara Danvers save National City from an attack by two super-powered villains called Silver Banshee, and Livewire.
Both DC Comics Universe successful series are created and executive produced by Greg Berlanti and Andrew Kreisberg, and is the first crossover event between two networks, which are both owned by Warner Bros Television.
"Supergirl - Episode: Worlds Finest" also stars Calista Flockhart, Chyler Leigh, David Harewood, Jeremy Jordan and Mehcad Brooks, and is scheduled to air on Monday, March 28th on CBS.