Movie Description
Black Magic (also known as Cagliostro) is a 1949 film adaptation of Alexandre Dumas's novel Joseph Balsamo. It was directed by the Russian-born Gregory Ratoff and stars Orson Welles in the lead role as Joseph Balsamo (aka 18th century hypnotist, magician and scam artist Count Cagliostro) and Nancy Guild as Lorenza/Marie Antoinette. Akim Tamiroff has a featured role.
(Summary from Wikipedia)