Top Billed Cast

1. 

   Orson Welles

   Joseph Balsamo aka Count Cagliostro

2. 

   Nancy Guild

   Marie Antoinette / Lorenza

3. 

   Akim Tamiroff

   Gitano

4. 

   Frank Latimore

   Gilbert de Rezel

5. 

   Valentina Cortese

   Zoraida

6. 

   Margot Grahame

   Mme. du Barry

7. 

   Stephen Bekassy

   Viscount de Montagne

8. 

   Berry Kroeger

   Alexandre Dumas, Sr.

9. 

   Gregory Gaye

   Chambord / Monk (as Gregory Gay)

10. 

    Raymond Burr

    Alexandre Dumas, Jr.

11. 

    Charles Goldner

    Dr. Franz Anton Mesmer

12. 

    Lee Kresel

    King Louis XVI / Innkeeper

13. 

    Robert Atkins

    King Louis XV

14. 

    Nicholas Bruce

    De Remy

15. 

    Franco Corsaro

    Chico

16. 

    Annielo Mele

    Joseph Balsamo as a Child

17. 

    Ronald Adam

    Court President

18. 

    Bruce Belfrage

    Crown Prosecutor

19. 

    Alexander Danaroff

    Dr. Duval / Baron von Minden

20. 

    Leonardo Scavino

    Gaston / Beniamino Balsamo (as Leon Lenoir)

21. 

    Tamara Shayne

    Maria Balsamo

22. 

    Joop van Hulzen

    Minister of Justice

23. 

    Peter Trent

    Dr. Mesmer's Friend

24. 

    Giuseppe Varni

    Boehmer

25. 

    Tatyana Pavlova

    Grieving Mother

26. 

    Harriet Medin

    (uncredited)

27. 

    Valentino Bruchi

    (uncredited)

28. 

    Ludmilla Dudarova

    (uncredited)

29. 

    Rosina Galli

    (uncredited)

30. 

    Silvana Mangano

    (uncredited)

31. 

    Filippo Minelli

    (uncredited)

32. 

    Michele Sakara

    (uncredited)

33. 

    Nicholas Soussanin

    (uncredited)

34. 

    Milly Vitale

    (uncredited)