Knock Knock... who's there? It's Keanu Reeves! In the past few years, horror filmmaker Eli Roth has made a return to actually making films, with his latest The Green Inferno opening soon after premiering at the Toronto International Film Festival and other festivals since. Roth isn't dragging his heels with a follow-up either with his psychological thriller Knock Knock ready to go now that Keanu Reeves has committed to play the film's central male lead. According to Deadline , Reeves will play a happily married man alone at home for the weekend who is visited by two beautiful young women who proceed to "turn his life upside down." Those two deadly women will be played by Lorenza Izzo from The Green Inferno and Ana de Armas, while another "Green...