Supergirl Season 3 Full Episodes

Season 3 of Supergirl premiered on October 9, 2017 | 23 Episodes
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.