The Castle of Fu Manchu is a 1969 film and the fifth and final Dr. Fu Manchu film with Christopher Lee portraying the title character.

Harry Alan Towers was a British radio and independent film producer and screenwriter. He wrote numerous screenplays for the films he produced, often under the pseudonym Peter Welbeck. He produced over 80 feature films and continued to write and produce well into his eighties. Towers was married to the actress Maria Rohm, who appeared in many of his films.