Worth reading if you're interested in freemasonry, and how it effects us all.
First, it is a large book and quite heavy reading. Many different people, times, places, from 3000BC to present. It's a massive subject, and Bauval & Hancock have tried to tie together events right through, so its probably not surprising its so huge. I was pretty up on the subject already but still found it heavy going, and maybe because of the ease of Internet researching, it has a bit of a cut'n'paste feel about it.
I think there is a lot of info missed out, perhaps deliberately, to limit the subject.
Its also pretty much a summary of several other books such as those by Robert Lomas on the freemasons. Bauval does add some of his own new interpretations that seem accurate. The "Picatrix" text is also interesting.
So, all in all, I wasn't convinced of a direct link back to Gnostic Alexandria, but more a general survival of ideas of free thought through the dark ages of Christian suppression. I was however convinced that the secret societies were a direct result of repressive monarchs and religion, and that almost everyone of influence was connected to freemasonry in the 18-19th centuries.
On the subject of modern freemasonry, there is no doubt now about the direct influence on city plans, buildings, & policy, which continues today.
So, in summary, lots of good info if a bit selective, not Pseudo-History, but a difficult book to read