本剧改编自阿加莎·克里斯蒂同名小说《悬崖上的谋杀》。 　　故事讲述当地牧师的儿子Bobby Jones和他机灵的社交名媛朋友Frances “Frankie” Derwent发现了一个奄奄一息的男人，临死前嘟囔着“他们怎么不去找Evans”，两人由此踏上了破案之路。带着从男人口袋里找到的年轻女子照片，两名业余侦探追寻着谜团背后的答案，也被谜团所追赶。...

In the British countryside, the Harver family head out on an idyllic summer camping trip where they can bury past tensions and enjoy some family bonding. But when their camp is sabotaged by an unseen ...

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