Browsing the well-stocked shelves of my local Borders yesterday, I saw a number of 'guides' to the background of Brown's 'Da Vinci Code'.

Has anybody here read one of these 'guides' (titles I can recall are "Cracking the Da Vinci Code" and "The Penguin Guide to the Da Vinci Code").

If so, can they recommend any of them?

I thoroughly and unashamedly enjoyed the novel (I've just bought 'Angels & Demons' on the strength of it) and now feel that it may prove interesting to find out more about the background material.
I watched Tony Robinson's recent programme on the subject (UK TV), but it was too much to take in in one viewing.

Regards,

Alex