Clemence Dane and Helen Simpson wrote this British crime tale, "Enter Sir John," in 1928. The story revolves around Martella Baring, a young actress on trial for murder, and Sir John Saumarez, a fellow actor, who takes up her case to prove her innocence. In 1932, they released the sequel film, Re-enter Sir John. The jury has found Martella Baring, a young actress, guilty of the murder of Edna Druce, the wife of the acting firm's manager. As a result of his attendance at the trial, the attractive and astute Sir John Saumarez, who is also an actor and the manager of an acting company, concludes that Martella is innocent. Sir John proceeds to prove Martella's innocence and prevent her execution for a crime she did not commit. He accomplishes this by enlisting the help of his stage manager and his wife. The novel inspired two films in 1930: Murder! and Mary. Alfred Hitchcock directed both of these films in the German language.