About Supergirl Season 2, Episode 12 : Luthors

After Metallo breaks out of prison and frees Lillian Luthor, the police blame Lena for his escape and arrest her. Despite overwhelming evidence, Kara refuses to believe her friend is guilty and fights to clear Lena's name. Flashbacks reveal how Lena came to be a Luthor. Meanwhile, Alex and Maggie celebrate their first Valentine's Day together. Guest Stars: Katie McGrath, Frederick Schmidt, Ian Gomez, Peter Gadiot, Aidan Fink, Dawn Chubai, Camille Marty, Judith Maxie, Desiree Zurowski, Marshall Bingham, Ian Butcher, Damian Mavis, Walcott E. Morgan, Robert Zen Humpage, Andy Rukes, Andrea Brooks, Brenda Strong,