In tonight's episode: a strange, twisting tale of hidden history. While most people these days associate the Nazi party with the horrors of World War II, Nazis were active far before that time. Join Ben and Matt as they delve into the story of two vast conspiracies: the Nazi plan to infiltrate American government, business and academia, versus the US plan to stop them. At the center of this bizarre story: Leon G. Turrou. To some, he saved the country. To others, he came all too close to bungling the job.