This volume contains two of Agatha Christie's most famous The Mysterious Affair at Styles Poirot Investigates Well-organized and consistent content. Dame Agatha Mary Clarissa Christie, Lady Mallowan, DBE (née Miller; 15 September 1890 – 12 January 1976) was an English writer known for her sixty-six detective novels and fourteen short story collections, particularly those revolving around fictional detectives Hercule Poirot and Miss Marple. She also wrote the world's longest-running play, The Mousetrap, which was performed in the West End from 1952 to 2020, as well as six novels under the pseudonym Mary Westmacott. In 1971, she was made a Dame (DBE) for her contributions to literature. Guinness World Records lists Christie as the best-selling fiction writer of all time, her novels having sold more than two billion copies.

Publication Year: 1978