You may wish to buy the book (make sure you do it through the Amazon icon or Bozza will sort you out) or you may just wish to be entertained by the reviews of it on Amazon, particularly the ones that ranked it low. This link should take you straight to it...
I though this (yes I know it is another link to a Wikipedia thread!) was interesting and quite a good overview of the general subject
http://en.wikipedia.org/wiki/Conspiracy_theory
Very dissappointed that my favourite one hasn't been mentioned:-...