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 novel into French and sent it to a publisher in Paris, who she learned was also Ms. du Maurier's [publisher] only after "Rebecca" became a worldwide success. The novels have identical plots and even some identical episodes." Author Frank Baker believed that du Maurier had plagiarised his novel "The Birds" (1936) in her short story "The Birds" (1952). Du Maurier had been working as a reader for Baker's publisher Peter Davies at the time he submitted the book. When Hitchcock's "The Birds" was released in 1963, based on du Maurier's story, Baker considered, but was advised against, pursuing costly litigation