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Dame Agatha Mary Clarissa Christie, Lady Mallowan, DBE (née Miller) was an English crime novelist, short story writer and playwright. She is best known for her 66 detective novels and 14 short story collections, particularly those revolving around her fictional detectives Hercule Poirot and Miss Marple. She also wrote the world's longest-running play, a murder mystery, The Mousetrap, and six romances under the name Mary Westmacott. In 1971 she was made a Dame for her contribution to literature. Most of her books and short stories have been adapted for television, radio, video games and comics, and more than thirty feature films have been based on her work.