Dame Agatha Mary Clarissa Christie was an English writer known for her 66 detective novels and 14 short story collections, particularly those revolving around fictional detectives Hercule Poirot and Miss Marple.

She also wrote the world's longest-running play, the murder mystery The Mousetrap, which has been performed in the West End since 1952. A writer during the "Golden Age of Detective Fiction", Christie has been called the "Queen of Crime".

Guinness World Records lists Christie as the best-selling fiction writer of all time, her novels having sold more than two billion copies.