CBS released a batch of preview images for the Supergirl & The Flash crossover, “Worlds Finest,” that airs Monday, March 28th at 8pm ET on CBS.
DC also released a promo for the episode.
Episode synopsis:
Kara gains a new ally when the lightning-fast superhero The Flash (Grant Gustin) 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.
The episode stars Melissa Benoist, Grant Gustin, Calista Flockhart, Chyler Leigh, Mehcad Brooks, David Harewood and Jeremy Jordan.
