The "quicksand" in the quicksand scenes towards the end of the film was made out of Quaker Oats.
Most of the actors were students at the University of South Florida drama department.
Shot on short ends.
The actress who played Janice (Joyce Molloy) was hit with several small rocks thrown by the lawn mower during the scene when she was laying out by the pool.
Was first screened at a midnight sneak preview in LaSalle, Illinois the night of March 15, 1975.