Check Out Promo Photos From The Supergirl & The Flash Crossover “Worlds Finest”

New promo photos from the upcoming crossover event between The Flash and Supergirl have been released. This new episode is titled “Worlds Finest” and it will air on CBS on March

In the episode, “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”.

Source: CBS