Numb3rs Season 5 Episode 6 Scan Man

David and Colby investigate a recent prison stabbing that might have connections to street gangs. Meanwhile, Charlie's passion for mathematics is reawakened when he meets an old rival and friend and analyzes his online chess game with an advanced statistical physics model. However, when the chess player, who also happens to be a genius, is kidnapped by his former employer who wants to exploit his techniques for illegal activities, Charlie has to use his wits to figure out the perpetrator's next move. In the meantime, Larry helps Amita work on her theoretical research on dark matter while Megan is grappling with the idea of starting a family with her husband. As the team closes in on the kidnapper's location, it becomes apparent that this is not just a simple case of a chess game gone wrong. Will they be able to solve the mystery before it's too late?