I Spit on Your Grave 4K 1978

Jennifer, a young writer, arrives in a remote area away from big cities to write a new novel in a rented house. To avoid driving to get groceries, she orders from a store with courier delivery. Matthew, a mentally retarded guy, delivers her order, and when he gets back, he tells his buddies about Jennifer. They decide to take advantage of the situation - the girl is unlikely to be able to call for help and stand up for herself - and sneak into her house.