A new full-length trailer for Eli Roth's upcoming film, Knock Knock, has hit the web. The film stars Keanu Reeves, Colleen Camp, Lorenza Izzo, Ana de Armas, Ignacia Allamand, and Aaron Burns.Knock Knock follows Evan Webber (Keanu Reeves) who is living the dream. Just look at his beautiful, successful wife, his two wonderful kids, and his truly stunning house—which he designed himself.