And Then There Were None is Christie's best-selling novel, with 100 million sales to date, making it the world's best-selling mystery ever, and one of the best-selling books of all time.
Although Christie was only missing for 11 days at the age of 36. Poirot's described in writing as having an egg-shaped head, often tilted to one side, and eyes that shine green when he's excited. He dresses very precisely and takes the utmost pride in his appearance.