Knock Knock is a 2015 American erotic horror film directed by Eli Roth, who also co-wrote the script with Guillermo Amoedo and Nicolás López. The film stars Keanu Reeves, Lorenza Izzo and Ana de Armas. The film was released on October 9, 2015, by Lionsgate Premiere. Knock Knock is a remake of the 1977 film Death Game, which was directed by Peter S. Traynor and starred Sondra Locke and Colleen Camp. All three individuals had a hand in the production of Knock Knock, while Camp also had a cameo in the newer film. However, there are some common elements between both films, Death Game & Knock-Knock. The later is an exact copy of another film: Vicious and Nude (1980) written and directed by Manuel Esteba.