Biography:

Adrian Havill tells the entire story of Robert Philip Hansen, the FBI DoubleAgent. For decades, the quirky but respected counterintelligence expert,religious family man, and father of six, sold top secret information toagents of the Soviet Union and Russia. A self-taught computer expert, Hansenoften encrypted his stolen files on wafer-thin disks. The data-some 6000pages of highly classified documents-revealed precious nuclear secrets,outlined American espionage initiatives, and named names of agents-spies whocovertly worked for both sides.