I want to start by saying that I thoroughly enjoyed the 2015 movie "Knock Knock". I think it is a movie that more people should get to see and experience. I also believe it is a movie that people either really love or absolutely hate. With Eli Roth directing and starring Keanu Reeves, Ana de Armas, and Lorenza Izzo it is something everyone should see. I explain that and give the movie my honest review and my reaction to it today.