Supergirl

Season 3, Episode 1

Episode Title: Girl of Steel

Air Date: 2017-10-09

Overview:

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.