Zeitgeist is a modern cyber thriller, the hero is a Big Data analyst, who can use i.e. data from your phone to predict your future behavior - and it's not made up, it's real, the author works for big companies doing just that, but on bigger consumer groups, to predict future trends on the markets. It's a story about corporations and whistleblowers, blogger-journalists, but action-packed and intense. It also has a few shocking plot twists.