| Horror, Sci-Fi
In 1870s Transylvania, scientist Dr. Callistratus is put to death by villagers who wrongly believe he's a vampire. However, his horribly disfigured henchman, Carl is on hand to orchestrate a life-saving heart transplant.
Victor Maddern got a headache from the extensive makeup he had to wear as the deformed hunchback Carl.
Bryan Coleman is credited as Brian Coleman in the closing credits.
On American prints the MPAA seal appears on the Universal-International logo.
The UK cinema version was extensively cut by the BBFC upon release with edits to the opening staking, shots of dismembered body parts in the laboratory and a reduction to a scene where a tube is inserted into a man's neck to drain blood. Additionally the infamous dungeon scene, showing potential female victims chained to a wall, was completely removed. The 2005 UK DD Entertainment DVD features the same cut cinema print. The U.S Dark Sky DVD may be culled from a different print as the tube scene is completely intact, despite missing the other aforementioned BBFC cuts.