Londoner Ronnie embarks on a journey to India when his mother, Suleka, goes missing and mysteriously ends up in a Kolkata hospital. Before Ronnie can unravel the mystery of what brought his mother back to her homeland, Suleka dies in an apparent cult killing. Further deaths point to a series of past murders that stopped 28 years ago when Suleka left India with her infant son. Until now.
　　As the darkness within Ronnie grows and the murders reach their peak, all roads lead to the feared witch of Kolkata's insane asylum.

　　新年午夜，杰夫（Dylan McTee 饰）和琳德赛（艾丽克斯·埃索 Alex Essoe 饰）这对夫妻驱车行驶在漆黑的路上。两人只顾谈情双爱，没有认真看着前方，结果狠狠装上了一名陌生人。他们将伤者带上车，准备拉到最近的医院治疗，然而对方却在半路断了气。经过一番内心挣扎，他们将死者带回家中。杰夫发现汽车牌照丢在了现场，于是又驱车赶了过去，留妻子一人在家。就在这时，琳德赛的妹妹汉娜（佩拉·哈莉-贾德林 Perla Haney-Jardine 饰）回到家中，而本该死去的男人突然活了过来，向汉娜发起攻击。混乱之中，汉娜开枪射杀对方。
　　事情似乎变得越来越复杂，杰夫尝试弄清对方的身份，结果却发现……

　　搬到一个新城镇后，一位年轻的大学生打算在乡村过一个悠闲的周末，但她很快发现自己并不孤单，并且需要为自己的生命而战。

　　史蒂芬（科林·法瑞尔 饰）是名优秀的心脏科权威，和同为医生的太太安娜（妮可·基德曼 饰）育有两个孩子，家庭十分富裕美满，史蒂芬最近和一名十六岁的少年马丁成为好友，两人无话不谈，十分亲近宛如父子，也时常邀请他来家裡作客，希望常常看起来有心事的马丁能跟孩子们成为朋友，让他打起精神来。然而，理当和睦的日常生活，却因为马丁的走入而产生变卦，一连串怪事和找不出病因的疾病接连发生，一股说不出的诡谲及恐惧开始笼罩着这一家，究竟马丁的真面目是什么？史蒂芬该如何挽救这逐渐被侵蚀的家庭生活？

　　A reclusive circus master invites a group of social media stars to his house of haunts. Anyone who can make it out before being scared into submission will earn $250,000 - but the stars soon learn they are not only competing for money, but also fighting for their lives.