I just watched Sleepaway Camp as i've been wanting to for a while now
it was quiet interesting to be honest, it has a shocking ending and suprised me much, it was kind of like the film "Carrie" in a way
Basicaly it's about a bunch of school kids who go to a camp somewhere out near the woods with the school and a bunch of random people are getting murderd in random ways and when you find out who was doing all the kills and another suprise to it..well you should watch it to find out!