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 Agente 007 - Licenza di uccidere (1962) and as Ernst Stavro Blofeld in A 007, dalla Russia con amore (1963), Louis Jourdan - Kamal Khan in Octopussy - Operazione piovra (1983), and Donald Pleasence - Ernst Stavro Blofeld in Agente 007 - Si vive solo due volte (1967).
First feature length filmed movie production of actress Kate Nelligan who had previously worked only on television series.