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.

• characters murdered one by one
• girl wears boxer shorts
• girl wears pajamas
• maniac
• murder of a nude woman