In an intense tale of psychological suspense, a San Francisco psychiatrist becomes sexually involved with a female patient who suffers from multiple personality disorder, and whose pathological ex-husband is an Oakland homicide detective.

Dr. Eldon Chance is a brilliant, lonely, forensic neuropsychologist with a long track record of getting involved with damaged, complicated women. While apartment hunting after separating from his wife, a series of bad decisions leads to Chance sleeping with a patient named Jaclyn Blackstone. Unfortunately her ex-husband is an Oakland homicide detective and the jealous type. Meanwhile, Dr. Chance meets a young man who goes by “D”; Chance believes he is a war-veteran, but he is in fact a deranged loner and self-styled Samurai skilled in the art of the blade. D is fascinated by Chance’s tales of his tormented and increasingly dangerous affair with Jaclyn and advises him that her ex-husband will find a way to destroy Chance.

As Detective Blackstone does indeed threaten the doctor, Chance and D plan a counter-strike. Meanwhile Chance continues his steamy affair with Jaclyn Blackstone (or is it one of her multiple personalities?) But the sexually voracious “Jackie Black” has a story that is far more complex and darker than he could have ever imagined…