Mutilator, The (1985)

aka: Fall Break

A group of teenagers decide to take a vacation at the beach house of one of their fathers. The kid (Matt Mitler) whose father owns the house just happened to accidentally kill his mother (Pamela Weddle Cooper) when he was a child (played by Trace Cooper). When they get to the house, the now-deranged father (Jack Chatham) takes out his revenge by stalking the teenagers. Also stars Ruth Martinez and Bill Hitchcock.

From an uncut import print.