You've heard of the famous plot to kill Hitler in 1944, code-named Valkyrie. But did you know that the last of the Valkyrie plotters only recently died? His name was Ewald von Kleist, and we'll be talking about him with one of his American relatives, Eric von Kleist. It turns out that the von Kleists, an old aristocratic family from what is now Poland, were anti-Nazi before anti-Nazi was cool. And their adventures make quite a cool story.