FOURTH MAN

In the aftermath of the Cold War, American intelligence caught three high-profiles Russian spies: Robert Hanssen, Aldrich Ames, and Edward Lee Howard. However, rumors have long swirled of another mole, one perhaps more damaging than all the others combined. Perhaps the greatest traitor in American history, perhaps a Russian ruse to tear the CIA apart, or perhaps nothing more than a bogeyman, he is often referred to as the Fourth Man. For the first time ever, New York Times bestselling author and former CIA operative Robert Baer tells the full story. After the Ames arrest, there were too many questions that remained unanswered, including the compromise of so many agents that the US would go on to have no Russian sources of any value at the time of Putin's ascent. The CIA launched another investigation, known as the Special Investigations Unit, to make sure there wasn't another mole in their ranks. Led by three women who had devoted their lives to the CIA, its existence was known to only a few. As they methodically hunted through their own, turning up loose threads, smoking guns, and a KGB source who might clinch it all, they came to a startling conclusion that would shake American intelligence to its core. In a cat-and-mouse game worthy of a le Carré novel, the Special Investigations Unit squared off against a man who couldhave been the most damaging spy in US history, in a chase with the potential to influence the future of America's relationship with Russia and its standing in the world.