On Halloween morning, 1938, Orson Welles awoke to find himself the most talked about man in America. The night before, Welles and his Mercury Theatre on the Air had performed a radio adaptation of H.G. Wells’s The War of the Worlds, converting the 40-year-old novel into fake news bulletins describing a Martian invasion of New Jersey. Some listeners mistook those bulletins for the real thing, and their anxious phone calls to police, newspaper offices, and radio stations convinced many journalists that the show had caused nationwide hysteria. Listen to this story.