Supergirl/The Flash Crossover: Get the Details, Check Out 'Comic Book' Poster

The Flash isn’t making a trip across networks — and universes — for just one villain.

Supergirl will pit Grant Gustin‘s speedster against two of Kara’s formidable foes when the CW star visits the CBS drama — solo, sadly — on Monday, March 28.

After suddenly arriving in National City from an alternate universe, The Flash teams up with the caped heroine to battle Silver Banshee (aka Assistant No. 1 Siobhan, played by Chasing Life‘s Italia Ricci) and returning baddie Livewire (True Blood’s Brit Morgan).

Kara, though, isn’t the only one in need of assistance. It seems the CW hero has lost his way home. (It’s just a couple clicks away on the channel dial, Barry.)

Read the official episode description below, then scroll down to check out a comic book-style poster for the crossover event.

“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.

Click on the image to (ahem) Zoom.

Supergirl The Flash Crossover