Skeptical journalist John Baxter (Tony Roberts) and photographer Melanie (Candy Clark) expose a fraudulent medium who is operating in the infamous Amityville haunted house. Then John surprises Melanie by deciding to buy the house and live in it. John's estranged wife, Nancy (Tess Harper), is also surprised, then disturbed, when John encourages their daughter, Susan (Lori Loughlin), to visit. The house attacks visitors with horrors that include insects and extreme cold and heat. Eventually, parapsychologist Eliot West (Robert Joy) comes to investigate.