Even though Cat Grant let on she knows Kara’s secret identity during the season 2 finale of Supergirl, not everyone has figured out the truth yet.
Lena Luthor (Katie McGrath) joined the show this past season and quickly bonded with the Girl of Steel’s alter-ego, and fans questioned at every turn whether or not she had figured out Kara’s secret. There were times when it almost seemed assured that Lena knew, but co-showrunner Andrew Kreisberg says that Kara’s new BFF hasn’t figured it out yet.
In TVLine’s recent edition of Matt’s Inside Line, Kreisberg was asked by a fan if Lena knows.
“At the moment, Lena definitely thinks they’re two people.”
So, there you have it, Lena Luthor doesn’t know Kara is also Supergirl; however, Kreisberg’s “at the moment” comment sure makes it sounds like that could change in season 3.
“SUPERGIRL is an action-adventure drama based on the DC character Kara Zor-El, (Melissa Benoist) Superman’s (Kal-El) cousin who, after 12 years of keeping her powers a secret on Earth, decides to finally embrace her superhuman abilities and be the hero she was always meant to be. Twelve-year-old Kara escaped the doomed planet Krypton with her parents’ help at the same time as the infant Kal-El. Protected and raised on Earth by her foster family, the Danvers, Kara grew up in the shadow of her foster sister, Alex (Chyler Leigh), and learned to conceal the phenomenal powers she shares with her famous cousin in order to keep her identity a secret. Years later, Kara was living in National City and still concealing her powers, when a plane crash threatened Alex’s life and Kara took to the sky to save her. Now, Kara balances her work as a reporter for CatCo Worldwide Media with her work for the Department of Extra-Normal Operations (DEO), a super-secret government organization whose mission is to keep National City – and the Earth – safe from sinister threats. At the DEO, Kara works for J’onn J’onzz (David Harewood), the Martian Manhunter, and alongside her sister, Alex, and best friend, Winn Schott (Jeremy Jordan). Also in Kara’s life are media mogul Cat Grant (Calista Flockhart), James Olsen (Mehcad Brooks), a photo journalist who moonlights as Guardian, a masked vigilante, Lena Luthor (Katie McGrath), and Mon-El of Daxam (Chris Wood), whose planet was ravaged by Krypton’s destruction. As Kara struggles to navigate her relationships and her burgeoning life as a reporter, her heart soars as she takes to the skies as Supergirl to fight crime. Based on characters created by Jerry Siegel and Joe Shuster, SUPERGIRL is from Berlanti Productions in association with Warner Bros. Television, with executive producers Greg Berlanti (“The Flash,” “Arrow”), Andrew Kreisberg (“The Flash,” “Arrow”), Sarah Schechter (“Arrow,” “The Flash”), Robert Rovner (“Private Practice,” “Dallas”) and Jessica Queller (“Gilmore Girls,” “Gossip Girl,” “Felicity”).”
Supergirl season 3 will premiere Monday, October 9 at 8/7c on The CW.