Agatha Christie wrote 66 detective novels. This figure refers to her mystery novels published under her own name, including the famous Hercule Poirot and Miss Marple stories.
Christie was one of the leading writers of the Golden Age of Detective Fiction. Her first published novel, The Mysterious Affair at Styles, appeared in 1920 and introduced Poirot. She later created Miss Marple, Tommy and Tuppence, Parker Pyne, and Harley Quin.
The number 66 is sometimes confused with larger totals because Christie also wrote short-story collections, plays, romantic novels under the name Mary Westmacott, nonfiction, and other works. Her bibliography is therefore broader than her detective-novel total.
Her detective novels include enduring titles such as The Murder of Roger Ackroyd, Murder on the Orient Express, Death on the Nile, and And Then There Were None. Together with her plays and short fiction, they made her one of the world's best-known crime writers.