I read it on Kindle. It's a very interesting and complicated book. And it offers an alternate and plausible explanation for much that went on in the CIA during the 60's and 70's. It's a book where you have to pay attention. The characters are believably drawn.
Nancy Pearl's Book Lust has done a fabulous job on picking up gems that were (a0 either published and didn't get much attention at the time; or (b) were published some time ago and are now out of print.
If you see a book on one of Nancy Pearl's lists, it's going to be a good read. And you can take that to the bank. She knows what she's doing.