eeeOldmissMarpleisonatrainridewhenshewitnessesamurderinapassingtrain.Shereportsittothepolicebuttheywon'tbelievehersincenobodycanbefoundtherecan'thavebeenanymurder,rightAsalways,shebeginsherowninvestigation.ThemurderwascommittedwhilepassingAckenthorpeHallandmissMarplegetsherselfajobthere,mixingcleaningandcookingwhilesearchingthehouseforclues.