内容简介
WhentheluxuriousBlueTrainarrivesatNice,aguardattemptstowakesereneRuthKetteringfromherslumbers.Butshewillneverwakeagain—foraheavyblowhaskilledher,disfiguringherfeaturesalmostbeyondrecognition.Whatismore,herpreciousrubiesaremissing.TheprimesuspectisRuth'sestrangedhusband,Derek.YetHerculePoirotisnotconvinced,sohestagesaneeriereenactmentofthejourney,completewiththemurdereronboard....