The finale episode came with the bombshell revelation that Cat Grant (Calista Flockhart) knows that Kara is Supergirl.
She knows Kara is Supergirl, but what about one of Kara’s other closest friends?
It appears that among Kara Danvers’ friends, Lena Luthor is one of the few people who doesn’t know she is Supergirl.
In the wake of the Supergirl season 2 finale, and the discovery that Cat Grant knows Kara Danvers is Supergirl, people have begun to question whether or not Lena Luthor (Katie McGrath) also knows Kara’s secret.