Murder! (1930 film) names of the two principal characters. The portrayal of the character Sir John Mernier was loosely based on that of the actor Gerald du Maurier, who was a friend of Hitchcock. Hitchcock later adapted three novels written by du Maurier's daughter Daphne du Maurier: "Jamaica Inn", "Rebecca" and "The Birds". Hitchcock makes his cameo appearance in the film as a man walking past the murder victim's house. The film's sets were designed by the art director John Mead. The German language version of the film, "Mary", was shot simultaneously on the same set with German speaking actors. Miles Mander reprised
Daphne du Maurier affair with Gertrude Lawrence, as well as her attraction to Ellen Doubleday, the wife of her U.S. publisher Nelson Doubleday, were cited. Du Maurier stated in her memoirs that her father had wanted a son; being a tomboy, she wished to have been born a boy. "The Daphne du Maurier Companion", edited by Helen Taylor, includes Taylor's claims that du Maurier confessed to her in 1965 that she had had an incestuous relationship with her father and that he had been a violent alcoholic. In correspondence that her family released to biographer Margaret Forster, du Maurier explained to a trusted