I have read every Dan Brown novel and have enjoyed them all, this one included.
Having said that I was slightly disappointed with his latest release. It echoed the Da Vinci Code so much that it felt like he used a formula to write the book.
Jacques Saunière (Peter Solomon)
Sophie Neveu (Katherine Solomon)
The Last Supper (Melencolia I)
Cryptex (Masonic Pyramid)
Ancient Secret hidden by the Priory of Sion (The Freemasons)
Also, one of the secret masonic ciphers used was one that I used in high school to write notes to my mates. This took a bit of the mystery and intrigue out of it for me, although the cipher is commonly used for entertainment purposes where freemasonry in concerned.
It is still full of interesting ideas and at times you wonder what is fact and what is fiction. I think that is one of the things that people like most about these religious thrillers. Check out this article on The National Geographic website: “The Lost Symbol” and the Freemasons: 8 Myths Decoded
I would recommend it if you like Dan Brown and his style. However if you have never read a Dan Brown book, go get yourself Angles & Demons or The Da Vinci Code.