It is revealed that the Communists have been using Shaw as a sleeper agent who, activated by a posthypnotic trigger, immediately forgets the assignments he carries out and therefore can never betray himself either purposely or inadvertently. In Shaw's case the suggestion that he play solitaire is the trigger. Seeing the "Queen of Diamonds" playing card transforms him into an assassin who will kill anyone at whom he is directed. Shaw’s KGB handler is his domineering mother, Eleanor. Married to McCarthy-esque Senator Johnny Iselin, Eleanor has convinced the Communist powers to help her install her husband as president and allow them to control the American government through him.