本剧聚焦Theresa和Helen姐妹二人，她们害怕自己的孩子也许和社区里另一个小孩的失踪有关。AnnaMaxwellMartin和RachaelStirling饰演姐妹。 SetduringtheBlitzin1940sLondon.AfterwritingtwelvePoirotnovelsinsixyears,AgathaChristieshouldbearichwoman.Insteadshe’sstrugglingtomakeendsmeet.Asthemoneyrunsout,Agathaconcoctsaplantokilloffhermostfamouscreationandsellthemanuscripttoasuperfan.WhenAgatha’swould-be-buyersuffersaheartattack,itseemsunfortunatebutbenign.Whenhermanuscriptisstolen,awiderconspiracybeginstotakeshape.Asthebombsfallandsheinvestigates,thedangerofhersituationbecomesapparent;Agathaherselfisthekiller’snexttarget. 
