PoirothasjustfinishedacaseinIstanbulandisreturninghometoLondononboardtheluxuriousOrientExpress.But,thetraincomestoasuddenhaltwhenarockslideblocksthetracksahead.Andallthethrillsofridingthefamoustraincometoahaltwhenamandiscovereddeadinhiscompartment,stabbedninetimes.Thetrainisstranded.Noonehasgottenonorgottenoff.Thatcanonlymeanonething:thekillerisonboard,anditisuptoHerculePoirottofindhim.