Master Detective Hercule Poirot has just solved a case in Jerusalem and is looking forward to a vacation. Unfortunately, he's summoned to another case in London and must board the Orient Express. A boorish passenger, Ratchett, whose business appears shady, tries to hire Poirot for protection. Next thing anyone knows, Ratchett has been murdered, and there's a whole train car full of suspects. Poirot interviews them one by one, including Ratchett's secretary, his valet, a society lady, a princess, a professor, a governess, a doctor, and a missionary. But the more Poirot learns, the less the clues seem to add up; they even seem to contradict one another. He comes to realize that this case will lead him to question everything he knows. - Common Sense Media