This film marks the return of director Terence Fisher after an extended absence from Hammer productions, as his films were considered too slow and emotional by this point. Fisher has mentioned in multiple interviews (and by his daughter's admittance), that this film was his personal favourite to make, along with the original Dracula (1958). After directing this film and The Devil Rides Out, Fisher would once again be out of the picture for a while due to several car accidents. His last hurrah at Hammer was to be another Frankenstein film: Frankenstein and the Monster from Hell (1974).
Veronica Carlson would work with three future Star Wars character actors each in a different Hammer Horror film: Christopher Lee (Count Dooku) in 'Dracula Has Risen From The Grave' (1968); this one with Peter Cushing (Grand Moff Tarkin); and David Prowse (Darth Vader) in 'Horror Of Frankenstein' (1970)