There are plenty of books that show the glimpse of a disturbed mind such as the Dexter series and American Psycho. However, this book is one of the first few to tackle this subject as we see a sheriff who puts up a good front, but underneath lies the mind of a dangerous killer.
This book was well written as it truly made you feel the mood of each scene and even cringe during the more uncomfortable moments. On the other hand, there were plenty of times that made it seem like it had a lack of focus. It really felt like it was just scenes that ran together instead of a real plot.