In a tale that races along like a James Bond novel, Kit Chellel introduces us to Niko Tosa, the man who had casinos scrambling to change roulette. Was his winning streak down to luck, skill, or a supercomputer? We never find out, but trying to figure it out is still a really fun ride.

That night, March 15, 2004, the thin Croatian seemed to be looking for something. After a few minutes, he settled at a roulette table in the Carmen Room, set apart from the main playing area. He was flanked on either side by his companions: a Serbian businessman with deep bags under his eyes and a bottle-blond Hungarian woman. At the end of the table, the wheel spun silently, spotlighted by a golden chandelier. The trio bought chips and began to play.