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.

Director: Stefan Pleszczynski

Writers: Jerry Siegel (based on characters created by), Joe Shuster (based on characters created by) | 5 more credits »

Stars: Melissa Benoist, Mehcad Brooks, Chyler Leigh