Born Agatha Miller in 1890, Christie is the world's bestselling writer of fiction, with more than 2bn copies sold. She died on January 12th 1976. Her autobiography was published posthumously in 1977. She is the grande dame of cosy crime, the genre of puzzle-driven mystery fiction she and her inter-war contemporaries—Ngaio Marsh, Dorothy Sayers and Georges Simenon—defined.
Christie was a wartime nurse during the first world war—hence her deep knowledge of toxins, which featured prominently in her plots. She was also a thwarted opera singer, a keen surfer and an archaeological expert who joined her second husband on digs in Iraq. Her brother Monty, who had "broken the laws of a lot of countries", provided the inspiration for many of her "wayward young male figures".
Christie wrote 66 novels, more than 150 short stories and 25 plays. She created the detectives Hercule Poirot and Miss Marple. Poirot, protagonist of more than 30 novels, is short, chubby and finicky, with a carefully waxed moustache and dandyish clothes—not hyper-rational and physically brave like Sherlock Holmes, nor quick with a gun like his hard-boiled successors. He had his origins among the Belgian refugees who reached Devon during the first world war. Miss Marple, a spinster fond of knitting and gardening, solves crimes in a dozen novels.
She practised misdirection and laid false clues alongside true ones, but insisted her plots never cheated or hid key evidence. Her juiciest mysteries, however, smash crime-writing rules: the narrator does it; the detective does it; all the suspects do it. In "The Hollow" (1946) she regretted that Poirot appeared at all. "Endless Night" (1967), with its working-class antihero and gothic darkness, shatters every Christie cliché.
The Christie family controls 36% of Agatha Christie Ltd. AMC Networks, an entertainment giant, owns the rest. In 2025 BBC Maestro launched an AI-generated writing course featuring a digitally recreated Christie, using only her own words drawn from her writings, notebooks and interviews.
Great American Axiom: Some is good, more is better, too much is just right.