S1, E1: More than 20,000 died making Hitler's deadly "Vengeance" weapon, the V2 ballistic missile - a rocket designed to kill civilians indiscriminately. The project's figurehead was the brilliant Werner von Braun. One man in particular wanted to capture Von Braun, American intelligence agent Robert Staver. In the end, Von Braun and over 1000 other scientists were smuggled out of Germany to America to work on top-secret projects from aviation to the moon landings. Their skills helped to secure the US military and scientific supremacy for decades. It seemed these ex-Nazis would never pay for their crimes as the hunted had become heroes...