Britewell when questioned by Quennell. Quennell's superior suggests he takes a holiday and delegate the case to Sgt. Allan, but the Detective Inspector refuses. He reveals his intention to send his daughter Meg to stay with some relatives in Sussex until the investigation is over. As they leave for the railway station, Allan informs Quennell that Dr. Mallinger did in fact know Frederick Britewell, prompting Quennell to perform an immediate search of Mallinger's home. He finds that the scientist and his daughter have left for Upper Higham. He also discovers a cellar filled with human bones and Granger's corpse. Quennell informs his superior he will be taking leave after all: he and Meg go to Upper Highham incognito as a vacationing banker named Thompson and his daughter. There they meet a young bug collector who shows him the proudest exhibit in his collection, a Deathshead moth, and Quennell discovers that Mallinger is also incognito as a "Dr. Miles" staying at a nearby estate. Can he stop Mallinger, who is attempting to create a male were-moth to be a mate for his increasingly bloodthirsty daughter? Cast Peter Cushing as Inspector Quennell Robert Flemyng as Dr. Carl Mallinger Wanda Ventham as Clare Mallinger / Were-moth Vanessa Howard as Meg Quennell Glynn Edwards as Sgt. Allan William Wilde as Frederick Britewell Kevin Stoney as Granger David Griffin as William Warrender John Paul as Mr. Warrender Leslie Anderson as Joe Trigger Simon Cain as Clem Withers Norman Pitt as Police Doctor Roy Hudd as Smiler Russell Napier as Landlord Robert Cawdron as Chief Constable Kenneth Colley as James Beryl Cooke as Housekeeper References External links 1968 horror films 1968 films 1960s historical horror films 1960s monster movies British historical horror films British monster movies Films set in the 19th century 1960s science fiction horror films Films directed by Vernon Sewell Mad scientist films Films set in London British exploitation films British science fiction horror films British vampire films 1960s English-language films 1960s British films