Two married couples become increasingly agitated with each other as they find out things about each other's past, while one of them is reviving disturbing packages from an unknown source

　　A group of cold case investigators stay at the Carmichael Manor, site of the grisly and unsolved murders of the Carmichael family back in the eighties. After four nights, the group was never heard from again. What is discovered on their footage is even more disturbing than anything found on the Hell House tapes.

　　在一次万圣节鬼屋之旅的五个晚上，一场莫名其妙的故障导致15名游客和工作人员死亡，一位纪录片摄制组又回到悲剧现场，去发现究竟发生了什么。