Murder on the Orient Express

Travelling on the Orient Express, Poirot is approached by a desperate American named Ratchett. Afraid that someone plans to kill him, Ratchett asks Poirot for help. Sadly the very next day Ratchett's worst fears become reality, when he is found dead in his cabin, a victim of multiple stab wounds. With nothing but a scrap of paper to go on, Poirot must piece together Ratchett's identity before he can establish which of his fellow passengers murdered him.