在这部古宅迷踪剧情/悬疑/犯罪片中,奥利弗太太（佐伊·沃纳梅克 Zoë Wanamaker 饰）是一位侦探小说家，她收到了富翁乔治（西恩·帕特维 Sean Pertwee 饰）的邀请，前往德文郡，为乔治设计一个大型的实地寻宝游戏。虽然这是一件好差事，但直觉告诉奥利弗太太这其中或许有诈，于是她邀请了波洛（大卫·苏切特 David Suchet 饰）以颁奖者的身份与她同行。
在富丽堂皇的庄园里，波洛结识了很多新朋友，其中包括乔治太太，一个被所有人都认为是个傻瓜的女人。一封突如其来的信件让乔治太太陷入了焦虑之中，与此同时，奥利弗太太设计的谜题也难倒了所有的客人。当大家发现，在剧本里应该死亡的女孩真的死去的时候，整个游戏开始变得不再那么有趣了。
With summer in the air, wealthy squire Sir George Stubbs and his fragile, childlike wife Hattie plan a grand fête for their Devonshire neighbors to celebrate their recent acquisition of Nasse House. Fancy dress, fortune telling, and a coconut shy are all scheduled, as well as a murder hunt designed by mystery novelist Ariadne Oliver. But Mrs Oliver is convinced something is amiss, and asks Hercule Poirot to attend the festivities as a means to put her mind at rest. Poirot scrutinizes the eclectic lot, which includes officious politicos, a put-upon secretary, a rakish architect, warring holidaymakers, a garrulous ferryman, an urbane foreigner, and Nasse's former matriarch, now content to be a humble lodger. They certainly have secrets to hide, but are any of them likely murderers? Or victims? When Mrs Oliver's fears are realized, however, the events are far from how she imagined them to unfold. A murder occurs as anticipated, but bizarrely, the victim is Marlene Tucker, a local Girl Guide who was assigned the role of the victim in Mrs Oliver's murder game! Her seemingly senseless death precipitates an even greater intrigue when Hattie Stubbs vanishes into thin air, clothes and all. Then the ferryman dies in a seemingly unrelated accident. What could all of this mean? Was Marlene silenced as a witness? Was Hattie abducted against her will? Was Mrs Oliver unknowingly manipulated by an unscrupulous murderer? And how does Sir George's hideous folly figure into the mystery, if at all? Poirot is on the case, determined to put the follies of Nasse House to rest once and for all.
你以为的并不是你以为的。最无耻的人，居然被说成真挚的女人，波罗该看眼科。。
