Ones! on Instagram: "Agatha Christie (1890-1976) was a British writer known as the "Queen of Mystery." She is one of the best-selling authors of all time, famous for her detective novels featuring iconic characters like Hercule Poirot and Miss Marple. Her works, including Murder on the Orient Express, And Then There Were None, and The Murder of Roger Ackroyd, are celebrated for their intricate plots, red herrings, and shocking twists. Agatha Christie's quote, "To rush into explanations is always