I just finished reading Dan Brown's excessively L-O-N-G book called The Lost Symbol. While his two other books--The Da Vinci Code and Angels and Demons--featuring the cool history-symbolism professor Robert Langdon were quick, interesting and entertaining reads, TLS is anything but quick. It's easily 200-pages excessive as a result it never seems to end. It has sentences such as "He felt his inner compass spin out of control." It has way too many twists and turns than are necessary. And finally, the ending is a huge cop-out. It's convenient, easy and a big yawn.
Spare yourself the trouble. Stay away from this Dan Brown.