剧情介绍
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。 Hastings is invited by his friend Charles Arundell to be at hand when he tries to break a water speed record on a Berkshire country lake, but his boat's engine fails him. At a subsequent reception at the estate of Charles' well-to-do aunt, Poirot and the other guests witness her refusal to continue to underwrite Charles' expensive hobby, and he threatens her. Later, when she is almost killed in a freak accident involving her pet fox terrier Bob, she confides to Poirot that she suspects a family member of trying to kill her to gain part of her estate. The detective advises her to disinherit her grasping relatives and name a friend as beneficiary. Despite this precaution, she dies abruptly under questionable circumstances, but the local authorities refuse to authorize an autopsy. Suspecting foul play, Poirot looks to his wits as well as the Arundell dog, who remains a silent witness to murder.
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。 Hastings is invited by his friend Charles Arundell to be at hand when he tries to break a water speed record on a Berkshire country lake, but his boat's engine fails him. At a subsequent reception at the estate of Charles' well-to-do aunt, Poirot and the other guests witness her refusal to continue to underwrite Charles' expensive hobby, and he threatens her. Later, when she is almost killed in a freak accident involving her pet fox terrier Bob, she confides to Poirot that she suspects a family member of trying to kill her to gain part of her estate. The detective advises her to disinherit her grasping relatives and name a friend as beneficiary. Despite this precaution, she dies abruptly under questionable circumstances, but the local authorities refuse to authorize an autopsy. Suspecting foul play, Poirot looks to his wits as well as the Arundell dog, who remains a silent witness to murder.
影片一波三折，但在最后破案阶段显然波洛先生没有充分的证据，甚至可以说是没有证据，而嫌犯那么轻易就承认了也让我费解。
哑证人给我的感觉有点像《恶意》的开头。我很容易地相信了贝拉作为受害者的言论，相信孩子父亲是一个家暴妻女甚至可能去杀人的渣男，到最后才发现自己信了片面之词，情绪被轻易煽动到包庇真凶的一方，直接了当地认定雅各布是坏人。哎，对生活中的事情也是，以后无论怎么样都要理智一点。【狗狗好萌！】
哑巴证人是狗狗，破题关键是镜子反射的字母应该是反的。最近生命中遇到了目前为止最难做的题，真想钻进波洛的年代躲起来。
狗很萌，过程也够吸引人，但最后证据实在是有些牵强，几乎等于没有= = 而且我还事先被剧透了导致知道了凶手是谁，所以更觉得没充分证据了。
S6E04，90s的最后一集。波罗结交了新朋友：小狗Bob。神叨姐妹实在很搞笑，凶手犯案手法太凶残--很想知道这集犯案手法是不是阿婆首创。最后一段波罗湖边道别，我似乎有印象——看得很难过。难过得其实不是戏，而是当年看这集结尾时候，我没想到还能重看此剧，并且此剧多年后还能继续拍下去……
第6季第4集。小狗超级可爱，还若有灵性，跟丁丁的米卢一样的种。老妇人为免亲戚觊觎修改了遗嘱，却随后死去，医生发现可能磷中毒，也被杀。情节不错，很自然地代入了带劲的推导过程，先疑侄子、后疑陪护、再疑侄婿，都没猜中。情节也不牵强，人物也不繁杂，算是佳品了。
好萌好萌的小狗，小小的眼神真叫人融化～谋杀不是因钱就是因爱，可是，即使灭了这个人，你仍无法得到钱或爱，这就是电影呈现给你的冷酷现实；两位通灵老太真有爱，被卷入谋杀而兴奋如许，对波罗瞎扯的一番鬼话全盘相信～
可爱的小狗，但是结论时期的改编还是令原著的俏皮大大失色
最后关键证物那里处理得似乎没有原著好啊，有点失望
镜子的反向性；雪纳瑞镜头感十足；
波洛和那只小狗的温情在其他作品中都很少见⋯⋯
改过了许多，黑斯廷斯好惹人爱的嘛！看波洛调戏他就受不了了
狗狗鲍勃好萌，完全把波洛的风头抢了，而且演技一流，一定经过了训练。更有意思的是鲍勃长得特像《丁丁历险记》里的“白雪”，我再查了下它的扮演者居然叫“史努比”！
狗狗好可爱呀！假装成最软弱的，居然是最强悍、最没有同情心的sociopath，果然女人犯起罪来会更彻底，更有头脑。
终于被朕找到了