In "Curtain," the brilliant mind of Hercule Poirot is tested for one final, chilling mystery at the scene of his first triumph, Styles Court. Confined to a wheelchair and grappling with the limitations of his aging body, Poirot summons his loyal friend, Captain Hastings, to be his legs and the witness to his last act of deductive prowess. As they confront a cunning adversary known only as 'X', who has already claimed multiple lives and is poised to kill again, the stakes could not be higher. Poirot, in a race against time and his own physical constraints, is determined to unveil 'X' and prevent the imminent tragedy, all while the shadows of their past at Styles loom over them, adding layers of complexity to their investigation. This masterful narrative, written during the dark times of World War II by Agatha Christie as a potential farewell, remained sealed away for three decades, emerging as a poignant goodbye to one of literature's most beloved detectives. "Curtain" not only marks the end of Poirot's illustrious career but also serves as a testament to Christie's unparalleled skill in weaving suspense and emotion into a story that is as much about the end of an era as it is about the resolution of a crime. As Poirot and Hastings confront their final challenge together, the legacy of their partnership and the genius of Poirot are celebrated in a conclusion that is both deeply moving and ingeniously plotted, ensuring that Poirot's farewell is as unforgettable as his remarkable career.