In Afghanistan, the Soviets kidnap Francine, hoping to exchange her for a U.S. mathematician who Amanda believes has been set up by the KGB.

The Soviets inject Lee with a virus that leaves him only 72 hours to live.

Lee suspects that retired Agency founder Harry Thornton (Howard Duff) and former Soviet Embassy courier Christina Golitsyn (Barbara Bain) are on an impossible mission: to obtain Khrushchev's spy list implicating American Government officials.