"As the long black limousine pulled up unannounced outside the gates of Buckingham Palace, the guardsmen were surprised to see one of the most famous and beautiful women of the day reclining elegantly in the back seat. Marlene Dietrich, then the world's highest-paid film star, was the epitome of husky-voiced sexual allure. "At the height of her fame, she seduced many of Hollywood's best-known actors, including John Wayne and James Stewart. But on that summer's evening in 1936 she had a very different conquest in mind. Dietrich was in England to make a film called Knight Without Armour at Denham Studios in Buckinghamshire. Her boyfriend, Douglas Fairbanks Jr, was friendly with the Royal Family and through him she had learned of King Edward VIII's plans to abdicate so he could marry American divorcee Wallis Simpson." Marlene Dietrich's plot to murder Hitler | Mail Online