Video: Promo for Supergirl 1×18 – “Worlds Finest”

CBS has released the preview for next week’s episode. Only 3 more to go!

“Worlds Finest” — Kara gains a new ally when the lightning-fast superhero The Flash 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.

Official publicity stills from the episode are available here and over 100 behind the scenes photos from on set are available here.

Highlight clips from last night’s episode are available on our YouTube channel.