Numb3rs - Season 1 Episode 7 -

When FBI agent Don Eppes finds several murders are linked to counterfeiting, his mathematically genial brother Charlie uses his skills to do what other investigating methods -as used by Agent Kim Hall, Don's colleague and ex in his Albuquerque days, a blank chapter in his past for Charlie- failed to, locate the forging and identify who did the graphical artwork required for his old-fashioned, relatively hard to detect fakes with real printing presses and watermark, not computer printing: it's a missing artist, who must be kidnapped and will probably by murdered as a ...