一脉相承

故事发生在一座地处偏远的小镇之中，老侦探戴夫正在调查一起恶性凶杀案件，这位凶残的杀手在镇上着实引起了不小的恐慌。随着调查的深入，戴夫发现案情变得愈加扑朔迷离，一个名叫巴尔博尼的男人浮出了水面，成为了戴夫的主要怀疑对象。小镇上来了一位电影明星，巧的是，他不是别人，正是戴夫的童年玩伴艾洛德。一次酒后，艾洛德吐露了一个惊人的秘密，而这个秘密竟然和戴夫几十年前调查的一宗案件有关。渐渐的，戴夫发现自己和家人似乎被卷入了某个阴谋之中，真相究竟是什么？凶手又藏在何处？恪尽职守的戴夫决定追查到底。。面对一个个错综复杂的悬疑案件，法证部高级化验师余星柏（黄宗泽饰）、重案组高级督察井浩然（袁伟豪饰）、法医科高级医生范佩清（蔡洁饰）三人团将如何一步步抽丝剥茧，在危机四伏的谜团中，用科学揭露事实寻觅真相？在面临生死时，他们又将如何坚守本心，完成对自我和他人的救赎？一切答案都将在本季剧集中揭晓。。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].。