Although wrapped as a thriller, this nailbiting yarn from Brown braces a controversial subject. Little surprise then that it has provoked such pointless debate here in the reviews. Funny, because a bit of literaly license is not uncommon, e.g., in the description of the Pyramids in "Death on the Nile" (Agatha Christie), or old England imagery from Sherlock Holmes, or the veracity of "Blairwitch Project." This is not intended as a documentary, it is fiction, so it is in fact quite a positive thing that it mirrors reality SO closely.As a sinister thriller with a killer plot, be prepared to immerse in speculation, action and intrigue. Fascinating. As a book about religion or cults, assuming that really gets your goat, well it will incite you to get to your keyboard (as it did me) and that's a good thing, people!A highly recommended book to own. I could even stand an entire second reading!