Photo: Unknown, Public domain — Source
English writer who is the best-selling fiction author of all time, with over two billion copies sold worldwide. She wrote 66 detective novels, 14 short story collections, and the world's longest-running play, 'The Mousetrap.' Her creations Hercule Poirot and Miss Marple are among the most recognizable characters in literature. She mastered the art of the plot twist and the locked-room mystery, essentially defining the modern detective novel. Her own disappearance for 11 days in 1926 remains one of the great real-life mysteries. She also wrote romance novels under the pen name Mary Westmacott.
Source: Agatha Christie Official