What is Agatha Christie’s best selling book?

Agatha Christie’s best-selling novel is “And Then There Were None”, with approximately 100 million copies sold. The book was published in 1939 and tells the story of ten strangers who are invited to an isolated island, and one by one begin to die.

The novel has since been adapted into numerous films and television shows as well as a successful stage play. Agatha Christie’s first novel, The Mysterious Affair at Styles (1920), introduced Hercule Poirot.

Agatha Christie also wrote the world’s longest-running play, the murder mystery The Mousetrap, which has been performed in the West End since 1952.

Agatha Christie’s first major recognition came with “The Murder of Roger Ackroyd” (1926), which was followed by some 75 novels that usually made best-seller lists and were serialized in popular magazines in England and the United States.

According to UNESCO’s Index Translationum, she remains the most-translated individual author. In 1955, Agatha Christie was the first recipient of the Mystery Writers of America’s Grand Master Award.