Double Bonus is a 2014 Chinese-language series. Months after a scarring event, a tight-knit group of friends are taken captive while on vacation at a cabin by a mingly normal couple. After days of being subjected to sleep deprivation and mental torture, the group must desperately try to discover the motivation of their captors before they're taken out one by one. Written by Anonymous. It was released on 22nd October 2015.