As a psychiatrist, I had some concerns about this book. I was bothered by the consistent use of the term "multiple personality disorder," although a parenthetical note indicates that the diagnosis is now referred to as dissociative identity disorder. I was also somewhat dismayed by the book's depiction of psychiatrists. There are two psychiatrists, who are generally portrayed as helpful, but each demonstrates a somewhat dubious understanding of boundaries. Furthermore, Andrew tells the reader that "the average multiple" sees eight psychiatrists before receiving a correct diagnosis. However, his friend Penny's diagnosis is immediately recognized by Julie, who has no mental health expertise. Andrew also briefly describes his experience in attempting treatment with a succession of psychiatrists who believed in a national conspiracy of satanic cults, past-life regression, and sexual assault by extraterrestrials. Finally, although I am not an expert in this area, the patients I have treated who meet criteria for dissociative identity disorder have been among the most tortured individuals I have ever worked with. Andy and Penny both have backgrounds of serious abuse, but the symptoms they experience during the course of the novel are often portrayed more as inconvenient than devastating.