If you’re living in the Las Vegas area, Cinema Slaughter is presenting a special screening of Chad Ferrin’s Someone’s Knocking at the Door at the Sci Fi-Center on July 24th at 8pm. Everyone else can check out the movie On Demand now! In this genre-defying grind-house throwback, a group of drug-addled, sexually deviant medical students are systematically terrorized by Wilma and John Hopper. The Hoppers, serial murderers and rapists, mysteriously return from the 1970s, and bring horrifying psychedelia with them. With comedy, subversion, satire and true gore, the students must face escalating attacks, shocking circumstances and visceral disgust. You can read B-D’s review of the film here.