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 set in the Middle East. Other novels (such as "And Then There Were None") were set in and around Torquay, where she was raised. Christie's 1934 novel "Murder on the Orient Express" was written in the Pera Palace Hotel in Istanbul, Turkey, the southern terminus of the railway. The hotel maintains Christie's room as a memorial to the author. The Greenway Estate in Devon, acquired by the couple as a summer residence in 1938, is now in the care of the National Trust. Christie often stayed at Abney Hall, Cheshire, owned by her brother-in-law, James Watts, basing at least two