As Eliza comes to National City for Thanksgiving, Kara turns to Lena for help when Cadmus unleashes a virus that instantly kills aliens, then is asked by Barry Allen and Cisco Ramon for help with an alien invasion on their Earth. <br /> <br />Director: Stefan Pleszczynski <br /> <br />Writers: Jerry Siegel (based on characters created by), Joe Shuster (based on characters created by) | 5 more credits » <br /> <br />Stars: Melissa Benoist, Mehcad Brooks, Chyler Leigh
