Marpleisaskedbyherlawyer,ChristianGilbranson,tovisithisstep-mother,CarrieLouiseSerrocold,anoldfriendofMissMarple's,athercountryestate.Carrie'shusband,Lewis,confidestoMissMarplethathesuspectssomeoneisslowlypoisoninghiswife,andwhenGilbransonvisitsthemansion,heismysteriouslymurdered.
里卡尔多·斯卡马奇奥,马西米利亚诺·加洛,安娜贝拉·沃丽丝