The mental health angles to this book involve the use of psychiatric diagnosis in motivating suicidal and homicidal behavior. Two murderers display perhaps the most unambiguous romance in the book, having met "in the loony bin," in which one is saved by the other from what sounds like incipient rape by hospital orderlies, whom he fairly quickly murders. Marc's wife, Monica, and his former high school classmate Dina were both seeing the same psychiatrist, a Dr. Radio, who seems to have failed to help either woman, although Dina initially falsely claims that he has. Just as the gunplay that kills Monica and almost kills Marc is about to break out, Dina, who knows that something is up, waits to get Dr. Radio's advice before acting, with lethal results. Then there is Rachel's husband, the senior FBI agent who we find has met his end through angry suicide. He is described as a manic depressive who went off his medication, at which point Rachel filed for divorce. Finally, there is the unfortunate end of Marc's sister, the drug addict, who seems to have found no help for her problem despite having a doctor for a brother, a man who gives the deformed a second chance.