The race to Mars is not without its peril. As the world's superpowers vie for supremacy in space, the true intent of the aliens, and the ultimate destiny for the human species, is revealed. Can the world marshal the will and resources of its people to strike back and take control of its own fate? Can NASA, led by Richard "Rock" Crandon, and America's adversaries find the ultimate courage to face what lies at Discovery's End and save the world? Black Infinity is the nail-biting conclusion to the Discovery Series.