America is threatened not by the devastation of nuclear war, but by the silent, deadly strains of a new microbe stolen from a top secret U. S. lab. And if this startling breakthrough in germ warfare is sold to the Russians, the battlefield of World War III will be America's air and water. There are no casualties too high to endure, no risks too great to take to stop the Russians from getting the microbes. The entire American intelligence network is on red alert... but only one long forgotten man is close to discovering the location of the germs. And he knows - with a dread certainty - that this is the final time that anyone will play...