ByMariya IslamJanuary 25, 2015 Knock Knock Official Trailer 1 Hits on Web [youtube]https://www.youtube.com/watch?v=RG0vh3CeLTI[/youtube] Release date: TBD Studio: N/A Director: Eli Roth MPAA Rating: N/A Screenwriters: Eli Roth, Nicolás López, Guillermo… Movie Trailer