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
Gerald du Maurier Gerald du Maurier Sir Gerald Hubert Edward Busson du Maurier (26 March 1873 – 11 April 1934) was an English actor and manager. He was the son of the author George du Maurier and brother of Sylvia Llewelyn Davies. During 1902, he married the actress Muriel Beaumont with whom he had three daughters: writers Angela du Maurier (1904–2002) and Daphne du Maurier (1907–1989), and painter Jeanne du Maurier (1911–1996). His popularity was due to his subtle and naturalistic acting: a "delicately realistic style of acting that sought to suggest rather than to state the deeper emotions". His "Times" obituary said