Karl Koecher: Stranger In A Strange Land

S1, E2: He was a linguist, a brilliant academic, and a master spy. She was a seductive blonde beauty, dressed in minks and diamonds. Karl Koecher is the only intelligence agent from the Soviet Bloc who succeeded in penetrating the CIA. He and his wife Hana spent twenty years leading a double life as "sleepers", Soviet moles building up a carefully designed identity.