Communications pros have to get that right. With so much tragic violence around the world, readers demand more detailed information and a ton of insight about the bad guys. One question on their minds is if the bad guys see themselves as heroes.
One new aid is the book "Murderous Minds: Exploring the Criminal Psycholpathic Brain: Neurological Imaging and Manifestation of Evil." The author is Dean A. Haycock, Ph.D., an expert in neurobiology. Here you can order it from Amazon.com.
Haycock approaches this from a scientific, not legal, perspective. So, this is not a primer for those studying criminal law. A compelling writer, he is still cautious in acknowledging how little is known about the human mind. Much of the book presents theories as well as the limits of psychological tests to determine if murderers meet all the criteria for psychopathy.
No surprise, there is pessimism if the worst of the bad guys - psychopaths who by definition have no empathy or conscience - can change. The few times they were granted parole they killed again. The classic case had been Norman Mailer's protege Jack Abbot.