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
Old English literature Conquest, died as old men. The most widely known secular author of Old English was King Alfred the Great (849–899), who translated several books, many of them religious, from Latin into Old English. Alfred, wanting to restore English culture, lamented the poor state of Latin education: Alfred proposed that students be educated in Old English, and those who excelled should go on to learn Latin. Alfred's cultural program produced the following translations: Gregory the Great's "The Pastoral Care", a manual for priests on how to conduct their duties; "The Consolation of Philosophy" by Boethius; and "The Soliloquies" of Saint Augustine.