Supergirl finds her mother (Alura Zor-el) and is stunned to discover that a part of Krypton survived (Argo City). Meanwhile, Alex is attacked while out with Ruby, and Lena considers how far will she go to keep Reign contained.

Writers: Jerry Siegel (based on characters created by), Joe Shuster (based on characters created by) |

Stars: Melissa Benoist, Mehcad Brooks, Chyler Leigh