阿加莎·克里斯蒂Christie has been referred to by the Guinness Book of World Records as the best-selling writer of books of all time and the best-selling writer of any kind, along with William Shakespeare. Only the Bible is known to have outsold her collected sales of roughly four billion copies of novels. UNESCO states that she is currently the most translated individual author in the world with only the collective corporate works of Walt Disney Productions surpassing her. Christie's books have been translated into at least 103 languages.
Her stage play The Mousetrap holds the record for the longest initial run in the world: it opened at the Ambassadors Theatre in London on 25 November 1952 and as of 2010 is still running after more than 23,000 performances. In 1955, Christie was the first recipient of the Mystery Writers of America's highest honour, the Grand Master Award, and in the same year, Witness for the Prosecution was given an Edgar Award by the MWA, for Best Play. Most of her books and short stories have been filmed, some many times over (Murder on the Orient Express, Death on the Nile and 4.50 From Paddington for instance), and many have been adapted for television, radio, video games and comics.
In 1968, Booker Books, a subsidiary of the agri-industrial conglomerate Booker-McConnell, bought a 51 percent stake in Agatha Christie Limited, the private company that Christie had set up for tax purposes. Booker later increased its stake to 64 percent. In 1998, Booker sold its shares to Chorion, a company whose portfolio also includes the literary estates of Enid Blyton and Dennis Wheatley.
In 2004, a 5,000-word story entitled "The Incident of the Dog's Ball" was found in the attic of the author's daughter. It was published in Britain in September 2009. On November 10, 2009, Reuters announced that the story will be published by The Strand Magazine.