Supergirl Season 3 Episode 1
Kara deals with the loss of Mon-El by focusing all her energy on being Supergirl and the mysterious new threat against National City. Alex confesses a secret to Maggie about their impending nuptials. A citizen of National City has a mysterious connection to Kara, and Lena makes a bold move.
Director: Jesse Warn
Guest Star: Adrian Pasdar, Calista Flockhart, Carlen Escarraga, David St. Louis, Emma Tremblay, Erica Durance, Floriana Lima, Fred Henderson, Gelsea Mae, Jeremy Burtenshaw, Jesse Chongo, Josh Hallem, Marc Senior, Sonia Sunger
Episode Title: Girl of Steel
Air Date: 2017-10-09