If you've read "Holy Blood, Holy Grail" and know anything about the history of christianity, it won't surprise you. It'll just bore you with it's crappy plot, shite characters and hilarious chapter endings.
It has that 'page turner' Harry Potter pacing. Speaking of which, I heard some interesting comment about more kids growing up reading JK Rowling than the Bible... which means that if she chucks any really obvious spirituality into the last one (CS Lewis style)... that could be really funny. She can get credited with creating not just a generation of 'readers' but 'born again's ahah
I don't think I'm going to wade into any discussion of 'satanism'... the word means different things to everyone, depending on what they've been exposed to.
This whole denying the pleasure principle vs. repression for the purpose of achievement thing is a little too freudian for me, I think western society has totally thrown that out the window... Foucault was onto something and everyone's turned into post-modern omni-amorous over-achievers. You can have your cake and eat it too, but the cake never fills you up.
Different discussion though.
I'm pretty gnostic. Those evil Archons are alwsys fucking up my life.