Agatha Christie was the author of over 100 plays, short story collections and novels which have been translated into 103 languages; she is outsold only by the Bible and Shakespeare. There have been many attempts to capture her personality on paper, to discover her motivations or the reasons for her popularity. Charles Osborne, a lifelong student of Agatha Christie, has approached this most private of persons above all through her books, and the result is a companion to her life and work.