Watch Supergirl s2e12 online stream free.
Description by couchtuner for Supergirl Season 2 Episode 12 : 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 introduces Maggie to the gang.
Watch It Here : Supergirl Season 2 Episode 12 Luthors