In 1938, Orson Welles produced a radio version of the 1898 book "The War of the Worlds" by H. G. Wells. Wells only produced one episode of the American radio drama anthology series "The Mercury Theatre on the Air". This episode was produced as the Halloween episode. It was broadcast on Sunday, October 30, 1938. It became famous for allegedly causing mass panic, although the scale of the panic is disputed as the program had relatively few listeners.