Watch: Supergirl Race The Flash Teaser



Watch a second short teaser below for the Supergirl and The Flash crossover featuring the two speedsters about to see who is the fast man – or woman – alive!

Preview images have also been released.

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 “Supergirl” and “The Flash” crossover episode, “Worlds Finest,” airs Monday, March 28th at 8pm ET on CBS starring Melissa Benoist and Grant Gustin.