Supergirl: The Complete Fourth Season

Season three saw Supergirl stop Reign and the other Worldkillers' threat to our planet, and in the process, Kara discovered her mother survived the destruction of Krypton. Reconnecting with her past caused Kara to realize that her true home is here on Earth, where big changes are taking place for her and all of her friends in National City - and also, it appears, for a doppelganger in Russia!