About Supergirl Season 3, Episode 22 : Make It Reign

Supergirl learns the true depth of Serena’s nefarious plans for Earth. Supergirl, Mon-El and Alura must devise a plan to stop her before Serena gets to Earth. J’onn prepares to say goodbye to his father. Guest Stars: Emma Tremblay, Esmé Bianco, Erica Durance, Anjali Jay, Carl Lumbly, Winsome Brown, Curtis Lum, Chad Lowe, Andrea Brooks, Rosemary Hochschild,