A New York suburban couple's marriage goes dangerously awry when the wife indulges in an adulterous fling.

Inquisitive Reveal Magazine journalist John Baxter moves into the Amityville house in defiance of the supernatural events connected to it and finds everyone around him besieged by evil manifestations connected to a demonic presence.

Connie is a wife and mother whose 11-year marriage to Edward has lost its sexual spark. When Connie literally runs into handsome book collector Paul, he sweeps her into an all-consuming affair. But Edward soon becomes suspicious and decides to confront the other man.

George Bynum, a patient of Manhattan psychiatrist Dr. Sam Rice, is brutally murdered. Soon afterward, Dr. Rice is visited by Bynum's co-worker and mistress Brooke Reynolds and by the investigating officer Detective Vitucci. As Dr. Rice reviews the case notes on his sessions with Bynum, he starts his own investigation. At the same time, he finds himself falling for enigmatic blonde Brooke, despite her increasingly suspicious behavior. The closer Rice comes to the truth, the more he puts his own life in danger...