Watch Supergirl – Season 3 Episode 20: Dark Side of the Moon
Cast: Katie McGrath , Melissa Benoist , Chyler Leigh , David Harewood , Jesse Rath , Nicole Maines , Azie Tesfai , Julie Gonzalo , Staz Nair , Peta Sergeant
Directors: Greg Berlanti , Andrew Kreisberg , Ali Adler
Watch Supergirl – S3E20
Episode Overview
Supergirl is stunned to discover that a part of Krypton survived. Meanwhile, Alex is attacked while out with Ruby, and Lena considers how far she will go to keep Reign contained.
