Rumors about a possible Supergirl/Flash crossover episode were making the rounds on the Internet for a long time. But the crossover has finally become a reality and the episode titled “Worlds Finest” is set to air on CBS Monday, March 28
Barry Allen will arrive in National City from an alternate universe and he’ll be teaming up with Supergirl to take on the Silver Banshee and Livewire. Kara will be helping Barry try to find a way back to his world and yes, there’s going to be a foot race between The Flash and Supergirl.
CBS has released some new photos from the upcoming episode along with the very first teaser trailer. You can check out the teaser in the clip above, and you can see the photos along with a synopsis below.
“Worlds Finest” – 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, on SUPERGIRL, Monday, March 28 (8:00-9:00 PM) on the CBS Television Network. Grant Gustin crosses over as The Flash.”
