The cast and crew slept at the main mansion location in Santa Barbara, California throughout the shooting of this movie.
Internet rumors state the film was released for a short, theatrical run on January 30, 1980- a full three months before the debut of the original Friday the 13th (1980). However, this information is false. Speaking to the "Video Junkie" blog, FX artist Mark Shostrom distinctly recalls shooting the film in December 1980 because he remembers the cast and crew gathering around a TV to hear the new John Lennon had been shot and killed.
Jennifer Runyon didn't know that Harry Reems was a famous porn star until someone on the set told her.