Cast
Harriet Medin
(uncredited)
Gregory Gaye
Chambord / Monk (as Gregory Gay)
Bruce Belfrage
Crown Prosecutor
Ludmilla Dudarova
(uncredited)
Rosina Galli
(uncredited)
Leonardo Scavino
Gaston / Beniamino Balsamo (as Leon Lenoir)
Tamara Shayne
Maria Balsamo
Akim Tamiroff
Gitano
Frank Latimore
Gilbert de Rezel
Margot Grahame
Mme. du Barry
Stephen Bekassy
Viscount de Montagne
Orson Welles
Joseph Balsamo aka Count Cagliostro
Valentina Cortese
Zoraida
Robert Atkins
King Louis XV
Silvana Mangano
(uncredited)
Nancy Guild
Marie Antoinette / Lorenza
Ronald Adam
Court President
Tatyana Pavlova
Grieving Mother
Milly Vitale
(uncredited)
Berry Kroeger
Alexandre Dumas, Sr.
Raymond Burr
Alexandre Dumas, Jr.