The Mystery of the Blue Train

Poirot meets the beautiful Katherine Grey in a London restaurant and agrees to keep her company on a journey on the Blue Train to the south of France. Katherine has recently inherited a lot of money and has been invited to visit some relations there, but she feels socially intimidated. Also on the train is Ruth Kettering, the daughter of the American oil tycoon Rufus van Aldin, not to mention the husband Ruth has just left (Derek Kettering) and also her lover - but Ruth gets brutally killed on the train, and her famous ruby is stolen. Later, Katherine Grey survives a murderous attack. Luckily, Poirot is on hand to solve the mysteries.