我朋友的老姐4

　　Driving home late at night during a heavy rainstorm, Glen experiences car trouble. Near where his car gets stuck, he spots a house, knocks on the door and is greeted by an oddly friendly middle-aged man, Arthur, and his younger wife, Cyndi. The strange couple pours him a drink, and then more drinks, followed by an unexpected offer that Glen can’t refuse. Elsewhere, a young woman, Katie, is feeling emotionally weighed down by a secret romantic arrangement that feels like a textbook case of gaslighting. And at the same time, in a nondescript research facility, medical professional Julie begins questioning her role in a bizarre experiment, fearing that she’s doing more harm than good.

　　讲述冠宇（张庭瑚 饰）因与父亲武雄（李兴文 饰）不合，为了赚钱早日搬离家，与好友龟仔（李明仓 饰）一起到旅社打工，不料打扫的房间竟有人自缢身亡，房内充斥不祥的泰国符号，而旅社老板娘（吴奕蓉 饰）更是举止诡异，整间旅社弥漫着死亡的气息，向冠宇席卷而来。