This is a good film directed by Riccardo Freda who sometimes signed his names as Robert Hampton. Although in the headlines the make up is by Francesco Freda, it is clear there is a collaboration of M. Bava especially as regard the transformation of Gisele Du Grand, that is simply fantastic. She begins old within three seconds all in the same frame. It was an excellent example of visual effects. Unfortunately the film was a disaster from the economic point of view due to secondary unknown actors, except G. M. Canale in the role of Gisele Du Grand. Somebody said she was Freda's girlfriend in the sixties.
Although the story is set in Paris many scenes have been shot in the studios. Freda was a good director but as many Italians he had few resources available. It is important to remember him for "I giganti della Tessaglia" too, that inspired Don Chaffey's "Jason and the Argonauts", but unfortunately he sank low with horror B films in the sixties. As it often happens the film was dubbed in post production with the following voices: Police inspector: E. Cigoli, Pierre the journalist: G. Locchi, Laurette's father: G. De Angelis
Although the story is set in Paris many scenes have been shot in the studios. Freda was a good director but as many Italians he had few resources available. It is important to remember him for "I giganti della Tessaglia" too, that inspired Don Chaffey's "Jason and the Argonauts", but unfortunately he sank low with horror B films in the sixties. As it often happens the film was dubbed in post production with the following voices: Police inspector: E. Cigoli, Pierre the journalist: G. Locchi, Laurette's father: G. De Angelis