Sleepaway Camp II: Unhappy Campers (1988)
Angela Baker escapes from a mental hospital and surfaces at a summer camp as a counselor who lectures her teenage charges on proper moral behavior. Those teens who break her strict rules -- from the camp chatterbox or a sex-obsessed girl to the boys who are peeping Toms -- are murdered by the impostor in various gruesome ways. As more campers go missing, intrepid counselor Molly begins to piece together the truth. summer camp, gore, murder, slasher, camp counselor, female serial killer, female psychopath, socialized psychopath