A rich American heiress gets murdered, and her jewels get stolen, in this fast paced Agatha Christie mystery novel, set on the luxury "Blue Train" also known in the story as the the Millionaires Train. None other than famous French detective Hercules Poirot happens to be traveling on the train at the same time, and he quickly applies his immense crime-solving skills to the task of tracking down the perpetrators. This is no easy task however, and the story bobs and weaves to a fascinating conclusion.