Howard Engel

Rose Loomis and her older, gloomier husband, George, are vacationing at a cabin in Niagara Falls. The couple befriend Polly and Ray Cutler, who are honeymooning in the area. Polly begins to suspect that something is amiss between Rose and George, and her suspicions grow when she sees Rose in the arms of another man. While Ray initially thinks Polly is overreacting, things between George and Rose soon take a shockingly dark turn.

Private detective Benny Cooperman is hired to keep an eye on a controversial preacher who is in hiding in a picturesque lake resort, but once he gets there Benny finds himself involved with murders, satanism, and unfriendly nature.