Listened to this audiobook. Unfortunately I had just finished the Psychopath Test, which was excellent so this book seemed a little redundant.
The overall theme is human conscience - what is it, what does it mean to have it (for the individual and society), and what does it mean to lack it.
My problem with this book is that conscience is an ability, and doesn't reside anywhere in the body, so the brunt of the argument is in essence abstract. I wanted to hear about real life sociopaths, which are dealt with, but also wanted to hear more about the physiological basis of sociopathy, not what the book is all about.