In Season 3 opener, Kara deals with the loss on Mon-El by focusing her energy on being Supergirl and concentrating on a mysterious new threat; Alex confesses a secret to Maggie; a citizen of National City has a mysterious connection to Kara; Lena makes a bold move.

• Supergirl - Season 3
• Melissa Benoist
• Mehcad Brooks
• Chyler Leigh
• Ali Adler
• Greg Berlanti
• Andrew Kreisberg