A portion of the score actually came from William Castle's Mansión siniestra (1959) which Allied Artists had distributed the previous year.
Producer/writer/director Bert I. Gordon's 10-year-old daughter Susan Gordon played the part of "Sandy Hubbard." This was Susan Gordon's fifth feature film.
Harry Fleer is dubbed by Paul Frees. This was a common occurrence in Frees' career as he was often called in to dub actors' voices during the post-production phases, always in an uncredited capacity.
On the German poster for this movie, actresses Susan Gordon and Juli Reding's names are mixed up and printed as Juli Gordon and Susan Reding. Also, director Bert I. Gordon's name is printed as Bert J. Gordon.
Included on Something Weird Video's Monsters Crash the Pajama Party (1965) Spook Show Spectacular Special Edition DVD.