Résumé : Molly Marks moves into a new apartment with her psychotherapist lover, Dr Jonathan McEwan, and discovers that there is a secret in his past. Not only that, but he has an identical twin brother, James, whom she never knew existed. Something in Molly comples her to seek James out. Unknow to Jonathan she is drawn into a violent sexual relationship with his twin brother, who was tried once before to destroy her life. they are identical in looks but as different, seemingly, as dark and light. James is saditic and cruel where Jonathan shows compassion and love, but Molly is fascinated, despite her growing fear for her sanity as she is no longer able to tell them apart...