The Psychopath Inside: A Neuroscientist's Personal Journey into the Dark Side of the Brain, James H. Fallon, 2013

Fallon, who had investigated the brains of psychopaths, accidentally looked at a scan of his own brain.  Guess what it showed.

Another relative's genealogical research turned up several murderers and others who did the kinds of things psychopaths are inclined to do. 

Fallon doesn't have a significant criminal history.  He's in a long-lasting marriage, and otherwise is more stable than he thought people with such brains were capable of being.  He does exhibit some psychopathic traits; enough to disturb some people, and make his life less than optimal.

Informative.  I'm skeptical about his speculations on why having a certain percentage of psychopaths in the population is useful to society.  Otherwise, recommended.

If I'd read this last year, I would've felt superior about his failure to recognize his psychopathic traits. (He'd had little hints such as test results, and comments from colleagues.)  But this year, I found out I had depression.