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 In 1934, she and Max Mallowan purchased Winterbrook House in Winterbrook, a hamlet adjoining the small market town of Wallingford, then within the bounds of Cholsey and in Berkshire. This was their main residence for the rest of their lives and the place where Christie did most of her writing. This house, too, bears a blue plaque. Christie led a quiet life despite being known in the town of Wallingford, where she was for many years President of the local amateur dramatic society. Around 1941–42, the British intelligence agency MI5 investigated Christie after a character called Major Bletchley appeared in