Stream the full Supergirl Season 3 Episode 18 movie online for free in crystal-clear HD quality. No downloads required—just press play and enjoy the action, complete with English subtitles for an enhanced viewing experience.
When Reign starts hunting Ruby, Supergirl and Alex work together to keep her safe. Supergirl and J'onn look to Sam's motherfor advice on how to stop Reign and come away with some shocking news.