The crossover event between CBS’ Supergirl and The CW’s The Flash is a week away! On March 28th, Supergirl comes face to face with the World’s Fastest Man when Grant Gustin guest stars as the Flash in an unprecedented superhero event!
In “World’s Finest” — Kara/Supergirl (Melissa Benoist) gains a new ally when The Flash (Gustin) suddenly appears from an alternate universe and helps her battle Siobhan, aka Silver Banshee (Italia Ricci), and Livewire (Brit Morgan) in exchange for her help in finding a way to return him home.
Crossovers are common between the “Arrow-verse” shows — Arrow, The Flash and Legends of Tomorrow, but this intra-network crossover is a big deal. It’s the first of its kind in the DC Comics live-action TV era. Though DC Comics character John Constantine (played by Matt Ryan) appeared on Arrow earlier this season, the series which the character originated from was canceled by NBC last year.
Nick Gomez will direct the episode, written by Andrew Kreisberg and Michael Grassi.
Supergirl also stars Calista Flockhart (Cat Grant), Chyler Leigh (Alex Danvers), Mehcad Brooks (James Olsen), David Harewood (Hank Henshaw/J’onn J’onzz) and Jeremy Jordan (Winslow “Winn” Schott).
Greg Berlanti, Ali Adler, Andrew Kreisberg, Sarah Schechter serve as executive producers.