The West German dubbed version produced by Schongerfilm, "Das Vermächtnis des Professor Bondi" (The Legacy of Professor Bondi), features a unique 9-minute long prologue. Ostensibly created to pad out the film's runtime to make it more suitable for playing in German theaters, it turns the film into a sequel to
House of Wax (1953), which was released there as "Das Kabinett des Professor Bondi" (The Cabinet of Professor Bondi). The sequence follows Professor Henry Bondi (ie. Professor Henry Jarrod, the character originally played by
Vincent Price), who survived his death in the earlier film, but now feels the ravages of time encroaching upon him and his Marie Antoinette wax figure. As a storm brews outside his dilapidated castle, he reluctantly decides that his last living relative, Walter Bondi (ie. Walter Paisley), must continue his work. Neither the crew who produced this prologue, nor the actor who plays Professor Bondi, have been identified.
