Joan Harrison (screenwriter) the film "Jamaica Inn" (1939) based on the novel by Daphne du Maurier. When Hitchcock moved to Hollywood in March 1939 to begin his contract with David O. Selznick to direct films, Harrison went with him as an assistant and writer. She continued contributing to the screenplays for Hitchcock's films "Rebecca" (1940), also adapted from a du Maurier novel, "Foreign Correspondent" (1940), "Suspicion" (1941), and "Saboteur" (1942). She was also credited as one of the screenwriters for "Dark Waters" (1944). Harrison was an uncredited screenwriter for "Ride the Pink Horse" (1947) and "Your Witness" (1950). She became a film producer
Daphne du Maurier Scapegoat", which she partly financed. Du Maurier was often categorised as a "romantic novelist", a term that she deplored, given her novels rarely have a happy ending, and often have sinister overtones and shadows of the paranormal. In this light, she has more in common with the "sensation novels" of Wilkie Collins and others, which she admired. The obituarist Kate Kellaway wrote: "Du Maurier was mistress of calculated irresolution. She did not want to put her readers' minds at rest. She wanted her riddles to persist. She wanted the novels to continue to haunt us beyond their endings." Du Maurier's