A series of blood-thirsty murders is investigated by Inspector Quennell and Sgt. Allan of Scotland Yard. But when their search for the killer leads them to the door of strange entomologist Dr. Carl Mallinger and his beautiful daughter Clare, events take a nightmarish turn in this 19th-century tale of transformation, monsters, and terror. Starring the legendary Peter Cushing and directed by Vernon Sewell (Curse of the Crimson Altar) this Tigon cult classic offers up a heady mix of late 60s British horror.