I have bought this book for more than one year. But haven't got a time to read until recently.
As a mystery book, this is a quite "honest" one. Some mystery books will never tell you all the clues until the end of the books. This one is different, the author is pretty honest of sharing all the information to readers. Knowledgeable reader can enjoy solving these puzzles with a little effort. The information needed to solve the puzzles are somehow redundant, so reader can even verify their solution to the puzzles.
As a religious book, I have zero religious knowledge. So, what I can say is that this is a pretty good book to the introduction of the Holy Grail.
However, the final part of the book is disappointing. And I think it is a little bit inconsistency to the rest part of the book. Maybe, the fact of the real world restricts degree of the writing freedom.
