Product Review
Christine and Mike are an ordinary middleâ€class couple, living in what could be any house, on any street. It's an average evening at home, until Christine goes to answer a knock at the front door. When she reappears, she has a knife at her throat and a gang of teenagers at her back. What happens next is anything but an average evening on an ordinary street…



![Knock Knock [DVD + Digital]](https://m.media-amazon.com/images/I/51qt9Zww6cL._SL75_.jpg)







