Great Mysteries and Myths of the Twentieth Century S01 E11 The Rudolf Hess Mystery

In May 1941, Nazi Germany seemed triumphant. Hitler was making his plans to attack Russia when suddenly his deputy flew to Scotland on a mysterious mission. Was it to make peace with Britain? Was it to set up a fifth column? Whatever the reason, Hess was found hanged in his cell in Spandau Prison in 1987 as the age of 93. Why would the Russians not release him? Was he murdered to prevent the reason for his visit ever becoming known?