Published on Oct 10, 2017
Creators: Ali Adler, Greg Berlanti, Andrew Kreisberg
Genres: Action, Adventure, Drama, Sci-Fi
Storyline: Girl of Steel
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.
- Melissa Benoist as Kara Zor-El / Kara Danvers / Supergirl
- Mehcad Brooks as James Olsen / Guardian
- Chyler Leigh as Alex Danvers
- Jeremy Jordan as Winslow "Winn" Schott, Jr.
- David Harewood as J'onn J'onzz / Martian Manhunter
- Calista Flockhart as Cat Grant
- Chris Wood as Mon-El
- Floriana Lima as Maggie Sawyer
- Katie McGrath as Lena Luthor
- Odette Annable as Samantha Arias / Reign