Peter Cushing deplored the inclusion of the rape scene and even apologized to his co-star Veronica Carlson.
The characters of Insp. Frisch (Thorley Walters) and the Police Doctor were added to the script at a late stage.
The controversial rape scene was added at the last minute, after shooting was nearly complete, because Hammer studio head Sir James Carreras thought the film lacked "sex".
The fifth installment in Hammer Films' Frankenstein series.