Agatha is attractive, intelligent, and has a rewarding career. She has nothing in her life to trouble her – except for a recurrent and frighteningly real dream of a strange man who comes to her at night and makes love to her. But as the dream begins to overlap into reality, she finds she is being possessed – not just mentally but physically, as, horrifyingly, her body begins to change. Two good friends try to help her, by researching the past life that seems to be leaking back into hers, but can they unravel the mystery in time to save her? The answer, when they find it, is more horrible than they could have imagined.