Harvard Professor Robert Langdon is called to the CERN scientific research facility when a scientist is murdered in a gruesome way linked to the Illuminati. He uncovers a plot against the Vatican and must work against time to stop the worst from happening.I very much enjoyed this book. It was easy to read, and although I guessed who the 'bad guy' was about half way through, there were so many twists and turns that there were still surprises. It was obviously well researched and quite complex things were explained clearly (especially to do with CERN). While Langdon was a bit bland, lots of the more minor characters just leapt off the page and were both interesting and well written.As with The Da Vinci Code, I thought it got a bit silly/unbelievable towards the end, but that's OK because I was enjoying the book. The plot was better than the writing style, which was a bit corny at times (my favourite was: "Langdon didn't need to be a symbologist to interpret the signs Vittoria was giving him" - smooth!). My only real issue with the book was the main female character, Vittoria. She was just too perfect to be believable - beautiful, best physicist in the world, randomly knows lots about the Vatican & the Illuminati, tough, never gets tired etc. I thought that about the Da Vinci Code too, that the female characters Dan Brown writes are just too amazing to exist and despite of all Vittoria's intelligence, she's still just a side-kick.