A pair of American agents faces espionage adventures with skill, humor and some serious questions about their work. Robinson's cover is as a former Princeton law student and Davis Cup tennis player; Rhodes scholar Scott is his trainer as well as being a language expert.

Kelly Robinson and Alexander Scott travel around the world in their profession as agents for the United States government. Their business is serious with no fancy gadgets or flashy villains; Kelly and Scotty are more apt to battle industrial spies and Cold War agents than megalomaniacal would-be world dominators. As their cover, Robinson travels the professional tennis circuit with Scott as his trainer.