Check out the official teaser trailer for Eli Roths Knock Knock starring Keanu Reeves, Lorenza Izzo and Ana de Armas, right now on Fan Reviews!Knock Knock Release Date: October 28, 2015Knock, Knock is a 2015 American horror thriller film directed by Eli Roth, who also co-wrote the script with Guillermo Amoedo and Nicolás López. The film stars Keanu Reeves.