寒门子弟李承志寒窗十年登科,封御史大夫后获准衣锦还乡接母妻进京。何巧莲与吴大江为夺其富贵伪造其母死讯,李承志疑母未亡,验尸后证实。张红梅患绝症,办丧礼时终与李承志相认。。阿伦娜·马歇尔(黛安娜·里格 Diana Rigg 饰)是一个美艳不可方物的女明星,天性放浪的她从不掩饰对其他男性的喜爱,也十分享受被男性追求的感觉,从而彻底忽略了丈夫和养女的感受。帕特里克(尼古拉斯·克莱 Nicholas Clay 饰)是个血气方刚的英俊小伙,虽然已经有了体弱多病的妻子克里斯汀(简·伯金 Jane Birkin 饰),但他依然难以抵挡向他暗送秋波的阿伦娜的诱惑。今年,位于莱瑟库姆湾旁小岛上的度假旅馆“快乐罗杰”成为了展示罪恶的舞台,来这里渡假的所有游客,似乎都和阿伦娜有个多多少少的利益纠葛。哪里有罪恶,哪里就有波罗(彼得·乌斯蒂诺夫 Peter Ustinov 饰),这次也不例外,聪明的他将一切矛盾都看在眼底。
阿伦娜死了,这令众人毫不意外。尽管每个人都有作案的动机,但每个人又都有完美的不在场证明。究竟是谁杀了阿伦娜?其实凶手早早的,便露出了他狐狸尾巴。。American psychologist John Holden arrives in London to participate in a symposium aiming to expose witchcraft and devil-worship as a fraud, with attention centered on a cult run by a Julian Karswell. Debarking his plane, Holden learns that the symposium leader, Henry Harrington, has suddenly died and he is now in charge. What only the audience knows is that Harrington was clearly killed by a demon, apparently summoned by Karswell to avenge his persecution. Despite both threatening and cajoling behavior by Karswell, Holden determines to proceed, though the only cult member willing to talk about his experiences is in a prison psychiatric ward, catatonic after allegedly killing yet another cult member. However, Harrington's niece, Joanna, believes, based on her uncle's notes, that Karswell may indeed have some satanic powers derived from an ancient tome in an obscure language which he has been able to translate, and attempts to warn the skeptic Holden. Karswell's mother also attempts to warn Holden off. However, the thing which begins to most get to Holden are the occasional, but mounting, sensory and mental disturbances he begins experiencing after an encounter with Karswell, and the discovery that, during this encounter, Karswell secretly slipped a slip of parchment with a curse in runic symbols on it into Holden's belongings, a parchment identical to one Harrington recorded having had passed to him in a similar manner shortly before his death... [N.B. Holden at no point stays at the Karswell estate].。