WhenCliveTrevelyan-MemberofParliament,warheroandheirapparenttoPrimeMinisterWinstonChurchill-iskilled,MissMarplesetsabouttosolvethecase.TrevelyanhasmadehisfortunemanyyearsbeforeinEgypthavingsecretlyuncoveredalosttomb.Heiskilledduringamajorsnowstormwhentherearenopoliceavailable.ThereareseveralpossiblesuspectsincludingTrevelyan'sward,JamesPearsonandhisfiancéeEmilyTrefusishispoliticalagent,JohnEnderbyajournalistCharlesBurnabyavisitingAmericanMartinZimmermanandseveralotherapparentlydisinterestedparties.AconvicthasalsoescapedfromDartmoorprison.MissMarpleconcludesthatTrevalyan'smurderisrelatedtohisdaysinEgyptandsetsabouttoidentifythemurderer.

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