The CW has released the Official Synopsis of Supergirl episode “Fallout” (4.02) that will be aired Sunday, October 21 at 08:00-09:00 PM.
CHAOS IN NATIONAL CITY
A shocking revelation causes chaos in National City. Supergirl (Melissa Benoist) sets out to capture Mercy Graves (guest star Rhona Mitra), while Alex (Chyler Leigh) takes control at the DEO. Back at CatCo, Kara decides to write an investigative story on Mercy and asks Lena (Katie McGrath) if she can interview her as Mercy has ties to the Luthors. Meanwhile, Brainy (Jesse Rath) meets Nia (Nicole Maines) and the two end up in a precarious situation.
SUPERGIRL stars Melissa Benoist as Kara Danvers/Supergirl, Chyler Leigh as Alex Danvers, Mehcad Brooks as James Olsen, David Harewood as Hank Henshaw, Jeremy Jordan as Winslow “Winn” Schott and Tyler Hoechlin as Superman.
Supergirl is an action-adventure drama based on the DC Comics character Kara Zor-El (Melissa Benoist), Superman’s (Kal-El) cousin who, after 12 years of keeping her powers a secret on Earth, decides to finally embrace her superhuman abilities and be the hero she was always meant to be.
Based on characters appearing in comic books and graphic novels published by DC Comics, with executive producers Greg Berlanti, Ali Adler, Sarah Schecter and Andrew Kreisberg for Berlanti Productions in association with Warner Bros. Television.