Which American superhero action-adventure television series developed by Ali Adler, Greg Berlanti, and Andrew Kreisberg stars American actress Calista Flockhart?
Supergirl (TV series): Supergirl is an American superhero action-adventure television series developed by Ali Adler, Greg Berlanti and Andrew Kreisberg (the latter two having previously created "Arrow" and "The Flash") that originally aired on CBS and premiered on October 26, 2015.
i don't know