Many of the buildings from this movie, including the Hunter Arms Hotel, where a large portion of it was filmed, still exist in downtown St. Cloud, Florida.
Connie Mason, playing the part of Terry Adams, was Playboy magazine's Playmate of the Month for its June 1963 issue.
Director Herschell Gordon Lewis novelized his screenplay into a tie-in book, the original edition of which, is now in high demand by collectors.
Filmed in fourteen days.