Mother's role was first offered to Bette Davis, but due to scheduling conflicts, she could not do it.
The film begins with a written disclaimer: "During the film you are about to see, you will be subject to subliminal messages and mild hypnosis. This will cause you no physical harm or lasting effect, but if for any reason you lose control or feel that your mind is leaving your body -- leave the auditorium immediately." The disclaimer is accompanied by a narrator, who advises viewers to take caution regarding their surroundings once the film has begun, and not to engage in conversation with any unknown individuals for the duration of the running time.