I thought this book was amazing! I am not sure If I have read another book more quickly. I love conspiracies theories so found it was great to have short, sharp overview of maybe a 100 different conspiracy theories. It gives you the pro's, con's and other possible reasons for the different areas. It is written with a fairly balanced view of the two sides as opposed to claiming everything we have ever been told is a lie.
As the other reviewer points out If you are looking for in-depth detail on each theory this is not the book for you. The longest any theory is addressed is only 3-4 pages so it is more a rapid quick fire review of a 100 odd conspiracy theories over any in-depth view. This is why I read it so fast, at the end of each short chapter I got sucked into the next one and couldn't put it down.