The information -- amounting to 6000 pages of highly classified documents -- named names. The Soviets, and their successors in Russian intelligence organizations, used it to undermine U.S. policies and to weed out spies in their own ranks. And they did not allow their moles the luxuries of a defense...

It all seemed perfect. Hanssen collected hundreds of thousands of dollars from his contacts. In the end, his take amounted to one-and-a-half million plus assorted valuable jewels. But he didn't do it for the money; he did it for the thrill. He'd become one of the most successful spymasters in the world's history. And no one even knew it. Robert Philip Hanssen thought he could outsmart the system. And until February 21, 2001, he was right. That's when federal agents moved in for the kill.

In an effort spearheaded by FBI Director Louis J. Freeh, the G-men found their mark, and catapulted the once innocuous bureaucrat into the national headlines: the most notorious spy since Aldrich Ames had finally become a victim of his own undoing.