I liked this book. It takes place in Washington DC and because I was there 7 months ago I could picture pretty much every place Robert Langdon went. I LOVED DC and when the book described some random fact about a place I had been I would occasionally say out loud "OH, I want to go back to DC." Sometimes I would say this to whichever dog happened to be sleeping next to me (I like to prop my books up on them) and sometimes I would say it while Collin was there. I got the same "whatever" response no matter whom my audience was. Anyway, that factor of the book made it really personal for me so I enjoyed that.
As for the story, what Dan Brown book would be complete without twists and turns and controversy? And Dan Brown did not disappoint. I saw some of it coming, but was really thrown off by other plot twists. Anyone who has read more than 2 of his books will think "Boy, that Dr. Langdon sure does get around. Not only the globe, but with women." His new lady love, Katherine, is by far the smartest woman who he's chased down lost symbols (ha ha) with. I liked her.
The mystery is all about Masonic symbols scattered throughout DC and a madman's all too evil and all too literal translation of those symbols. They mention the "Mormon's" a few times, but always in a good light and we are in no way central to the story; just passing elements of Robert Langdon's colloquial (point out the OBVIOUS) lectures Dan Brown is famous for.
It's a fun read. I don't think it will be as controversial as his other books. Then again, it doesn't make any claims that would tick off Christianity.
And, just in case anybody is interested, I really want to go back to DC.