 In the second episode to discuss Mac s past life as a CIA operative, he s called on by his old boss to help investigate a "sleeper," a Communist agent who has lived undetected in the United States and adopted American customs until it s his -- or her -- moment to strike. An upcoming U.S.-Soviet intelligence summit is the apparent moment. The sleeper could be anybody, even Mac s intelligence buddy, because he or she is thoroughly Americanized and could be engaged in anything, including counterintelligence. Throw in several Soviet hit men assigned to waste the sleeper before Mac uncovers his or her identity ...