I listened to this on Audible, and found it to be very interesting. The psychology was presented in a way that even someone without a basic understanding would be able to grasp the concepts. I am always curious about what makes people decide to commit staggering crimes such as this, and the short answer is that there is no simple answer most of the time. This was an interesting book into the mind of James Holmes. The only complain that I have was that the book seemed to drag a little in a few parts, but it was not unbearable.