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 researchers have suggested that Christie may have begun to suffer from Alzheimer's disease or other dementia. Dame Agatha Christie died on 12 January 1976 at age 85 from natural causes at her home Winterbrook House which was located in Winterbrook, Wallingford, Oxfordshire. At the time of her death Winterbrook was still a part of the parish of Cholsey. She is buried in the nearby churchyard of St Mary's, Cholsey, having chosen the plot for their final resting place with her husband Sir Max some ten years before she died. The simple funeral service was attended by about 20 newspaper and