Agatha Christie 2 billion copies, and her estate claims that her works come third in the rankings of the world's most-widely published books, behind only Shakespeare's works and the Bible. According to Index Translationum, she remains the most-translated individual author, having been translated into at least 103 languages. "And Then There Were None" is Christie's best-selling novel, with 100 million sales to date, making it the world's best-selling mystery ever, and one of the best-selling books of all time. Christie's stage play "The Mousetrap" holds the world record for longest initial run. It opened at the Ambassadors Theatre in the West End
Agatha Christie: An Autobiography Gregg, the director of six of her plays who, in his 1980 memoir "Agatha Christie and All That Mousetrap", spoke with some disparagement of Christie, stating at one point, “She owed an enormous debt to Peter Saunders yet in her autobiography she gives him scant mention. Speaking of "The Unexpected Guest" (which Gregg directed) she says quite simply that she wrote it. I think perhaps she didn’t like to confess – to herself, even – that her theatrical accomplishments could not be achieved without help.” However, Janet Morgan, Christie's official biographer, considered the "Autobiography" to be “an enchanting book, fluent,