“He has neither what I call the outward vision (seeing details all around you what is called an observant person) nor the inner vision--concentration, the focusing of the mind on one object. He has a purposefully limited vision. He sees only what blends and harmonises with the bent of his mind.”

British crime writer of the 20th century, Agatha Christie is best known for creating the iconic detective Hercule Poirot and the enigmatic Miss Marple. Her novels and plays, including *Murder on the Orient Express* and *The Mousetrap*, redefined the mystery genre with intricate plots and psychological depth.