University psychology professor Dr. Richard Wicks (Robert Quarry) plans a weekend research experiment at the allegedly haunted Heron house, where a series of grisly murders took place 10 years earlier. Also along for the ride are fellow psychologist Beth (Kathrin Lautner), historian Harry (Oliver Darrow) and psychic Amy (Brinke Stevens). The house was built by Satanist Henri Picard and, of course, people start seeing things and get possessed. Also lurking around is Father Anthony Vicci (Erik Estrada), who has a connection to the events 10 years ago and is being haunted by it.
I revisited this low budget shocker recently and still enjoyed it. Ray rarely did straight horror flicks when he started getting his groove on and this proves he should have done more of them. Yes, it is cheap and plunders from LEGEND OF HELL HOUSE, THE HAUNTING and THE EXORCIST, but Ray knows how to properly work in great exploitation material. Seriously, where else are you going to see Erik Estrada recoil in fear at the sexual advances of a nude nun (an uncredited Michelle Bauer) wearing only her habit? Surprisingly, Ray lets Brinke keep her clothes on and just lets her act. The location is that same big white house you've seen a dozen times in stuff like SORORITY HOUSE MASSACRE II. There is also some pretty good make-up effects from Optic Nerve. Carol Lynley has a couple of scenes as Sister Jillian. Father Merrin gets a "thanks" in the end credits.