Fallout (Supergirl)


 * For the Arrow episode of the same name, see Fallout (Arrow).
 * For The Flash episode of the same name, see Fallout (The Flash).
 * For The Flash character with the alter ego of the same name, see Neil Borman

Synopsis
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.