The Last House On The Left

Horror legend Wes Craven's first film proves you don't have to crawl before you can run - this guy had terrifying mastered right out of the gate. Teenagers Mari and Phyllis go into the city for a rock concert, and find themselves in the middle of a brutal nightmare after they're picked up by a gang of escaped convicts. When chance brings the convicts to Mari's house the next day, her devastated parents offer up some truly gruesome hospitality.