I love all his books, too. This particular one deals with cheating and questions whether we should question our SO. Unfortunately, for many on SI, we trusted blindly. The main character comes at this subject from two angles--a woman in love and a philosopher. It does make one realize how differently we who have been cheated on think compared to those who have not been cheated on.
The TV series was worth seeing, but I'm not sure worth buying, but I tend not to buy that stuff and rent it instead.