Agatha Christie (1890–1976) is one of the most successful and influential authors in literary history, widely known as the “Queen of Crime.” Born in Torquay, England, she began writing during World War I and went on to publish 66 detective novels and 14 short story collections, alongside several plays, including The Mousetrap, the world’s longest-running play. Her iconic characters Hercule Poirot and Miss Marple revolutionized detective fiction, making her a household name across generations. Christie’s writing is renowned for its clever plots, red herrings, and unexpected twists, with novels like Murder on the Orient Express, And Then There Were None, and Death on the Nile ranking among the most beloved crime classics. Her works have sold over two billion copies worldwide, making her the best-selling novelist of all time, second only to Shakespeare and the Bible. Agatha Christie’s influence on mystery writing is immeasurable, and her legacy endures through adaptations, films, and the continuing popularity of her timeless stories.