It has its moments of suspense. But it also exposes what is perhaps the biggest flaw of the whole 'Da Vinci Code' series. That is: It tries desperately to be a smart series, like some sort of 'National Treasure' for post-grads. More often than not, though, it comes dangerously close to outsmarting itself. If you're at all familiar with the series, either on the page or on the screen, you can probably guess how 'Inferno' plays out. As in 2006's 'The Da Vinci Code' and the 2009 sequel 'Angels & Demons,' Hanks' academic detective is pressed into service to decode a series of clues that send him dashing through beautiful, time-worn European cities in the hopes of beating the clock and unraveling a particularly nefarious plot. In 'Inferno,' the action starts in Florence, Italy, followed by stopovers in Venice and Istanbul.