The Cast Show Off: In the film, John and Claire bond over a riding excursion. In Real Life, Van Devere was an avid equestrian. Scott, however, was terrified of riding and was replaced by a body double instead.
Write What You Know: Russell Hunter, who wrote the screenplay along with William Grey and Diana Maddox, claimed that the film was based on his own experiences while staying in a haunted housein 1969.