Supergirl Season 1 Episode 18
Supergirl
Watch supergirl season 1 episode 18 online. 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.
- Genre: Drama, Sci-Fi & Fantasy, Action & Adventure
- Country: United States of America
- Director: Greg Berlanti, Ali Adler, Andrew Kreisberg
- Cast: Melissa Benoist, Chyler Leigh, David Harewood, Katie McGrath, Jesse Rath, Nicole Maines, Azie Tesfai, Julie Gonzalo, Staz Nair, Peta Sergeant
