Les trois jeunes détectives: Le manoir de la terreur

In this movie, the character Stephen Terrill is depicted as an inventor. In the original book this film is based on, he was a horror actor from the silent film era, who had the ability to appear in different costumes and make-ups (similar to Lon Chaney). He later became unemployed when the sound film was invented, because it required him to speak, and he couldn't hide his lisp and squeaky voice anymore. This resulted in the audience laughing at him, which depressed Terrill so much that he resigned from acting. Subsequently, he isolated himself from the public and resided in his castle, until he reportedly took his own life. Since then, Terror Castle was reported to be haunted by Terrill's ghost.

At the beginning of the movie the Rolls Royce is seen driving on the right side of the road. At the end of the movie, as the boys return from their trip, the Rolls drives on the left side, which is wrong for California, but correct for South Africa, where the movie was filmed.

Follows Les Trois Jeunes Détectives : Le Secret de l'île aux fantômes (2007)