When elderly Mrs. Peters appears to suffer a stroke at her Nursing Home, only Diana Knightson realizes the truth. Her young colleague Marguerite Friend deliberately terrified the old woman! For the beautiful girl is working toward her own evil agenda... Amongst their office colleagues, only Diana believes that Marguerite is not as she seems. And when Diana's fiance Phil Walsh is seduced by Marguerite and turned against her, she knows she is in mortal danger. But after Mrs. Peters' death, Diana gains an unexpected ally -- Jarvis Peters, the old woman's son, who is determined to avenge his mother’s murder. For only together can they fight the forces of evil!