When a new threat emerges, Dr. Nate Heywood seeks out Oliver Queen to help find the scattered Legends; once reunited, they go to 1942, to keep Albert Einstein from being kidnapped before the Nazis destroy New York City with a nuclear bomb.

Director: Dermott Downs

Writers: Greg Berlanti (developed by), Marc Guggenheim (developed by)

Stars: Victor Garber, Brandon Routh, Arthur Darvill