Slumber Party Massacre III

After a hard day of volleyball at the beach, a teen whose parents are away decides to have a slumber party with her girlfriends. Their boyfriends predictably show up to scare them, but a stranger from the beach is also seen lurking around the house. Soon the group begins experiencing an attrition problem.

Slumber Party Massacre III is a 1990 slasher film and the second sequel to the original 1982 slasher film The Slumber Party Massacre. It was directed by Sally Mattison, written by Bruce Carson and produced by Catherine Cyranthe alongside producer, Roger Corman, who had produced the first sequel in 1987.