S1, E6: In the new era of the Glasnost, Soviet armed forces train with British forces on a Nato exercise. Colonel Orlove, top K.G.B. man, is determined to defect and escapes in the guise of a British soldier. With British and Soviet intelligence after him, he chooses to side with the Americans and offers some compromising revelations about his former employers. But is he telling the truth? Sam McCready, top S.I.S. man specialising in the Soviets, has his doubts... Starring Mike Farrell, Peter Egan, Robert Foxworth, Alan Howard and Diana Quick.