In this BONUS episode, Mark interviews Killing Hitler author Roger Moorhouse. They discuss the failed assassination plots, Hitler's somewhat lax security, and the possible aftermath of a "successful" assassination. Plus, Moorhouse discusses his approach to finding history's forgotten heroes, villains and events.

We will detail a successful plot to assassinate Adolph Hitler at his Wolf’s Lair headquarters on July 20. And we will muse how his death would save 10 million lives and lower the heat of the coming Cold War.