No Plot Spoilers.
While not really a book, this interview series is stunningly good. An unbiased and expansive examination of the human experience, as exemplified through our collective mythos and archetypes.
Those who have dogmatic approaches to life or morality may have a lot of trouble with the concepts discussed, at length, in this series. However, those enthralled by the concept of cyclical representations of religions and mythologies (a line that is perilously nudged repeatedly) will find a fascinating experience.
Plus it has Star Wars in it. So, it has to be good.