And now back to my reading on Angels And Demons . The story has now come to the part where you have to solve a mystery and the answer will in turn will point to another mystery. Perhaps this is another good technique for keeping a story going with some added suspense. Something to learn from Dan Brown in story writing. Both Langdon and Vittoria first have to solve a mathematical code which will point to a trail art pieces. These art pieces will hopefully lead to the four places where the four kidnapped cardinals will be executed. If he can get there in time, he would be able to capture the killer and find where the canister containing the antimatter is located. The clock is ticking and the tension is there. During the weekend I read up to the part where Langdon and Vittoria are standing at the very first place where the killer will strike. Langdon has doubts and hope that he had solved the puzzle correctly otherwise they would have wasted the time of a group of Swiss Guards who should be elsewhere. They had earlier spent a long time trying to solve the puzzle on locating the first place. Did Langdon guess correctly? That’s where I stopped and will only find out tonight when I continue to read the book.