David E. Hoffman writes: The spy had vanished.

He was the most successful and valued agent the United States had run inside the Soviet Union in two decades. His documents and drawings had unlocked the secrets of Soviet radars and weapons research years into the future. He had smuggled circuit boards and blueprints out of his military laboratory. His espionage put the United States in position to dominate the skies in aerial combat and confirmed the vulnerability of Soviet air defenses — showing that American cruise missiles and strategic bombers could fly under the radar.

In the late autumn and early winter of 1982, the CIA lost touch with him. Five scheduled meetings were missed. KGB surveillance on the street was overwhelming. Even the “deep cover” officers of the CIA’s Moscow station, invisible to the KGB, could not break through.

On the evening of Dec. 7, the next scheduled meeting date, the future of the operation was put in the hands of Bill Plunkert. After a stint as a Navy aviator, Plunkert had joined the CIA and trained as a clandestine operations officer. He was in his mid-30s, 6-foot-2, and had arrived at the Moscow station in the summer. His mission was to give the slip to the KGB and make contact. [Continue reading…]