Basedontheactual11-daydisappearanceoffamedmysterywriterAgathaChristiein1926,thefilmfictionalizesherwhereaboutsduringthattime.Whenherhusbandannouncesthatheisleavingherforanotherwoman,ChristiecreatesamysteryoutofherownlifebyhidinginaHarrogatehotelandplottingrevengeonherspousewhileallofEnglandsearchesforher.ThereporterwhofindsChristietriestofoilherplanandfinallyfallsinlovewithher.
里卡尔多·斯卡马奇奥,马西米利亚诺·加洛,安娜贝拉·沃丽丝