在这部巧克力盒谜案悬疑/犯罪片中,一个让波罗耿耿于怀的失败的案例，有没有听说过？这就是了， 法国颇有声望的副部长保罗·戴鲁拉德在一次晚饭后突然倒地身亡，原因被认为是心脏病突发。
三天后，波罗受人所托前往死者住所进行暗访，在保罗·戴鲁拉丧生的书房里，波罗注意到，桌面上放着满满一盒巧克力，盒子是粉色的，而盖子却是蓝色的。
经过缜密的分析，波罗宣布：他找到了真凶！
当然，最后的结果是：真凶另有其人.
Accompanying Inspector Japp to Brussels, who is receiving an award from the Belgian government, Hercule Poirot tells him a case from 20 years before. Poirot was a young policeman at the time and at the request of Virginie Mesnard, agrees to investigate the death of rising young politician, Paul Deroulard. The courts had already ruled that he had died of a heart attack, but she believes he was murdered. Poirot believed Deroulard had been poisoned, likely from a box of chocolates he had been given by an aristocrat, Xavier St. Alard. In the end, Poirot identified the killer, even obtaining a confession, but chose not to make it public, for reasons that he explains to his colleagues.
被说丑得像老鹰的宾利小姐原来是这么漂亮的美人！。
