Martin Bormann
His 2000 book "Hitler's Traitor: Martin Bormann and the Defeat of the Reich" contends that Germany's defeat was largely the result of the Red Orchestra spy ring that had penetrated the German High Command. The book contends that Martin Bormann, a top aide to Adolf Hitler, and Heinrich Müller, head of the Gestapo, were both Soviet agents. "Publishers Weekly" said that Kilzer "revisits this arena with an entertaining synthesis of evidence about the activities of these spies, extensive accounts of relevant military history, and informed speculations about causes and effects, motives and behaviors."