6 Season
126 Episode
Supergirl - Season 1 Episode 18 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.
- Country : United States of America
- Genre : Drama, Sci-Fi & Fantasy, Action & Adventure
- Director : Greg Berlanti, Ali Adler, Andrew Kreisberg
- Cast : Melissa Benoist, Chyler Leigh, David Harewood, Katie McGrath, Jesse Rath, Nicole Maines
