Trivia

This was the first American International release to be in both color and CinemaScope.

Final film of director Arthur Crabtree.

Herman Cohen wanted Vincent Price or Orson Welles in the lead. While he claimed they were too expensive, it is also true that by having a British star (as well as director and other crew) he could take advantage of the tax breaks provided by the Eady Levy, designed to assist film-making in Britain.

Last full length feature of Beatrice Varley.

The VCI Entertainment DVD release promises a "European Remastered Version" running 94 minutes. The disc contains only the standard British release running 78 minutes.