A shocking revelation causes chaos in National City. Supergirl sets out to capture Mercy Graves, while Alex takes control at the DEO. Back at CatCo, Kara decides to write an investigative story on Mercy and asks Lena if she can interview her as Mercy has ties to the Luthors. Meanwhile, Brainy meets Nia and the two end up in a precarious situation.
Stars: Melissa Benoist, Mehcad Brooks, Chyler Leigh
Director(s): Jerry Siegel, Joe Shuster
Writer(s): Jerry Siegel, Joe Shuster
Genres: Action,Adventure,Drama,Sci-Fi