‘Supergirl’ Promo Teases ‘The Flash’ Arrival in Crossover (Video)
The first promo for the “Supergirl”-“The Flash” crossover episode teases a tense showdown between the cross-network DC Comics heroes — at least at first. Grant Gustin opens the promo as Barry Allen, making quick work of the Supergirl symbol before landing in a dark alley in National City, headquarters of Kara Zor-El, a.k.a. The episode is titled “Worlds Finest,” a nod to the old DC Comics book of the same name, and features an alternative-universe Flash showing up to help Supergirl battle villains Silver Banshee (Italia Ricci) and Livewire (Britt Morgan) in exchange for her help in finding him a way home.
