Dr. Leo L. Martello - The Rise and Fall of Count Cagliostro
The motion picture, "Black Magic" starring Orson Wells was based upon the life of Count Cagliostro and was chiefly concerned with his hypnotic powers. However, for the sake of story value the picture, as most made for popular appeal, sacrificed fact for effect. One example of this is his being killed in the end in a duel with the lover of d'Oliva, the girl who supposedly was under his spell and who bore a striking resemblance to Marie Antoinette. And the famous diamond necklace affair was exaggerated, at least where the Count was concerned.