The highly-anticipated crossover between Supergirl and The Flash happens March 28 on CBS.
The episode is called “Worlds Finest” and it brings Grant Gustin from The CW series onto Supergirl as he accidentally ends up on her Earth.
To promote the episode, CBS has released some special artwork which you can find to your left, evocative of a classic DC Comics cover featuring a Superman and Flash race. In the episode itself, Barry and Kara will have to work together to defeat the Silver Banshee and Livewire.
You can read an official description for “Worlds Finest” at our Supergirl portal, the recently-revived KryptonSite.
