A superior parapolitical thriller promoted by ideological issues (should a scientist be loyal to his country or his profession?) and some almost-current events, this takes Andrew Tanyard, president of the National Academy of Sciences, to Peking for a ping-pong game with a former, brilliant student who defected from Harvard to go back to China. He now claims to have made a great immunological breakthrough which Tanyard questions while all hell accompanies his trip back home (a C.I.A. man shot before his eyes). By the time he gets there with a coded fortune card he realizes how he's been used (or rather his blood -- to carry messages) and that the real betrayal is of course from within. . . . It should keep you on pins and hypodermic needles.