Louis Jourdan (Villefort) previously played Edmond Dantès in The Story of the Count of Monte Cristo (1961).
Anthony Dawson, who portrayed Noirtier de Villefort, father of Prosecutor Gérard de Villefort, portrayed by Louis Jourdan, was just five years older than Jourdan.
First English-language film of actress Taryn Power who previously had only appeared in Spanish language productions.
Stars three actors who also played James Bond villains. Anthony Dawson - Professor Dent in Dr. No (1962) and as Ernst Stavro Blofeld in From Russia with Love (1963), Louis Jourdan - Kamal Khan in Octopussy (1983), and Donald Pleasence - Ernst Stavro Blofeld in You Only Live Twice (1967).
First feature length filmed movie production of actress Kate Nelligan who had previously worked only on television series.