Code to Zero

It's January 1958 - a dark hour in the Cold War, and the early dawn of the space race. At Cape Canaveral, a countdown has begun. On launch pad 26B sits Explorer I, America's best hope to match the Soviet Sputnik and regain the lead in the contest for the skies above.
Caught in this mighty struggle between the superpowers are four old friends from Harvard. Bound together by the past and separated by war, each knows that Explorer's failure to be anything less than a triumphant success would have disastrous consequences for the United States. And as Luke Lucas starts to unravel the mystery of his amnesia and relearn the story of his life, his desperate search leads him back to his Harvard friends: to his wife, to his best friend, to the woman he once loved more than life itself ... and to the realization that his fate is tied to the rocket that stands ready at the Cape. For Luke knew something that someone deliberately wanted him to forget, and unless he is able to discover his own terrible, deadly secret, Luke may be left powerless to save the launch of Explorer - and with it, America's future.