Orson Welles
Joseph Balsamo aka Count Cagliostro
Nancy Guild
Marie Antoinette / Lorenza
Akim Tamiroff
Gitano
Frank Latimore
Gilbert de Rezel
Valentina Cortese
Zoraida
Margot Grahame
Mme. du Barry
Stephen Bekassy
Viscount de Montagne
Berry Kroeger
Alexandre Dumas, Sr.
Gregory Gaye
Chambord / Monk (as Gregory Gay)
Raymond Burr
Alexandre Dumas, Jr.
Charles Goldner
Dr. Franz Anton Mesmer
Lee Kresel
King Louis XVI / Innkeeper