Slumber Party Massacre III (1990)

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.
Sally Mattison
Keely Christian, Brittain Frye, Maria Ford, Hope Marie Carlton, Brandi Burkett, Maria Claire, David Greenlee, Yan Birch, David Kriegel, Michael Harris, Garon Grigsby, David Lawrence, Devon Jenkin, Wayne Grace, Alexander Folk, Marta Kober, Lulu Wilson, Ron Smith
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