Born on 15 September 1890 in Torquay, Devon, South west England. She became and remains the bestselling novelist of all time. She is best known for her 66 detective novels and 14 short story collection, as well as the world's longest-running play"the mousetrap ". Her books have sold over a billion copies in English language and a billion copies in translation. Agatha died in the year 1916.