Hitchcock was quoted as saying that he was forced to alter the ending of the movie. He wanted an ending similar to the climax of the novel, but the studio, more concerned with Cary Grant's "heroic" image, insisted that it be changed. Writer Donald Spoto, in his biography of Hitchcock "The Dark Side of Genius", disputes Hitchcock's claim to have been over-ruled on the film's ending. Spoto claims that the first RKO treatment and memos between Hitchcock and the studio show that Hitchcock emphatically desired to make a film about a woman's fantasy life.