Supergirl & The Flash Team Up In Worlds Finest Sneak Preview

CBS has released a sneak preview of next Monday's "Worlds Finest" episode of Supergirl, which will feature the Woman of Steel (Melissa Benoist) teaming-up with The Flash (Grant Gustin).

Kara gains a new ally when The Flash arrives from an alternate universe and helps her fight the Silver Banshee and Livewire in exchange for her helping him return home.

Watch a trailer for the crossover episode in the video below.

Check out preview images in our gallery at the bottom of the page.

"Worlds Finest" episode of Supergirl will air Monday, March 28 at 9 p.m. on CBS.