阿伦特尔小姐（Ann Morrish 饰）给波洛侦探（大卫·苏切特 David Suchet 饰）写了一封信，希望波洛能够帮助她解决一些家庭内部的问题，并且暗示可能有什么人想要她的命。来自职业的直觉告诉波洛事有蹊跷，他匆匆忙忙赶到了阿伦特尔小姐的住处。 　　可惜，波洛的到来并没有挽救阿伦特尔小姐的性命，死前，她将全部的遗产留给了非亲非故的女佣，这让她那些整天惦记着钱的亲戚们感到十分愤怒和不解。在老搭档黑斯廷上尉（休·弗拉瑟 Hugh Fraser 饰）的帮助下，波洛开始了对于事件的调查，他走访了阿伦特尔小姐的众多亲戚和朋友，听取了证词，透过波洛聪慧的思维和缜密的逻辑，真相已然浮出了水面。

When Noam pairs with Jonah on a history project, they are surprised to discover gays and lesbians were also targets of the Nazi Holocaust. Among Noam’s grandfather’s possessions he discovers what could be a love letter written by a man. Detective work and historical research inspire the pair to track down the letter writer, in this intriguing and important drama.