The second season of the American television series Supergirl, which is based on the DC Comics character Supergirl / Kara Zor-El, a costumed superheroine who is the cousin to Superman and one of the last surviving Kryptonians. The season was ordered in May 2016, and unlike the first season which aired on CBS, this season was picked up by The CW. While the first season was filmed in Los Angeles, beginning with this season filming relocated to Vancouver, to reduce the high production costs of the series. The season was filmed from July 2016 to April 2017. Alongside Melissa Benoist, who stars in the titular role, principal cast members Mehcad Brooks, Chyler Leigh, Jeremy Jordan, and David Harewood return from the first season, and are joined by Chris Wood and Floriana Lima. Former series regular Calista Flockhart returns in a recurring capacity. The season premiered on The CW on October 10, 2016, and ran until May 22, 2017, over 22 episodes. It received overall critical acclaim, being viewed as an improvement over the first season. The series was renewed for a third season on January 8, 2017. Episodes Cast and characters Main Melissa Benoist as Kara Danvers / Kara Zor-El / Supergirl Mehcad Brooks as James Olsen / Guardian Chyler Leigh as Alex Danvers Jeremy Jordan as Winslow "Winn" Schott Jr. Floriana Lima as Maggie Sawyer Chris Wood as Mon-El / Mike Matthews David Harewood as J'onn J'onzz / Martian Manhunter and Hank Henshaw / Cyborg Superman Recurring Andrea Brooks as Eve Teschmacher Brenda Strong as Lillian Luthor Calista Flockhart as Cat Grant Ian Gomez as Snapper Carr Katie McGrath as Lena Luthor Tyler Hoechlin as Kal-El / Clark Kent / Superman Sharon Leal as Miss Martian / M'gann M'orzz Helen Slater as Eliza Danvers Tamzin Merchant as Lyra Strayd Teri Hatcher as Queen Rhea Guest Production Development On May 12, 2016, Warner Bros. Television announced that Supergirl had been renewed for a second season of 22 episodes and would move to The CW from CBS. Ali Adler and Andrew Kreisberg served as the season's showrunners. It was also announced that, beginning with this season, production would relocate to Vancouver from Los Angeles. Writing In the second season, Kara Danvers / Supergirl and James Olsen end their romantic relationship, in favor of maintaining a platonic one. Kreisberg said regarding this decision, "We realized that the best scenes between [Kara and