These stories of pursuit and the struggle to balance the scales of justice are full of drama and tragedy. Brilliant German scientists worked for the Nazi regime in the 1930s and 1940s, creating the V2 ballistic missile. When the war ended, the US was desperate to get its hands on these scientists before the Russians did. They wanted their expertise as the need for military superiority overrode any concerns of bringing these criminals to justice. Their wartime work hid a dark secret. Hundreds of slave labourers died building the V2. There was a chase across Germany in 1945 to get them before the Russians did. But these rocket scientists had blood on their hands.