The four greats

Book name: The Big Four Author name: Agatha Christie Number of pages: 272 Category: Novels Publication date: 2009 Publisher: Jarir Bookstore Brief about the content of the book: Surrounded by the door frame in Poirot's bedroom, stood an unexpected guest, covered from head to toe in dust. The man stared at his gaunt, exhausted face for a moment, then swayed and fell to the ground. Who was this man? Was he suffering from shock or just exhaustion? But most importantly: what was the meaning of the number 4 that was scribbled in poor handwriting across the page repeatedly?