Knock Knock Official Trailer #1 (2015) - Keanu Reeves Movie HD. When a devoted husband and father is left home alone for the weekend, two stranded young women unexpectedly knock on his door for help. What starts out as a kind gesture results in a dangerous seduction and a deadly game of cat and mouse. The Fandango MOVIECLIPS Trailers channel is your destination for the hottest new trailers the second they drop. Whether it's the latest studio release, an indie horror flick, an evocative documentary, or that new RomCom you've been waiting for, the Fandango MOVIECLIPS team is here day and night to make sure all the best new movie trailers are here for you the moment they're released. In addition to being the #1 Movie Trailers Channel on YouTube, we deliver amazing and engaging original videos each week. Watch our exclusive Ultimate Trailers, Showdowns, Instant Trailer Reviews, Monthly MashUps, Movie News, and so much more to keep you in the know. Here at Fandango MOVIECLIPS, we love movies as much as you!.