Sleepaway Camp (1983)
...you won't be coming home!
After a horrible boating accident kills her family, Angela, a shy and sullen young girl, moves in with her eccentric aunt Martha, alongside her protective cousin Ricky. One summer, Martha sends the kids to Camp Arawak. Soon after their arrival, a series of bizarre and increasingly violent accidents begins to claim the lives of various campers. Who is the twisted individual behind these murders?