It happened in a dream. Seemingly from nowhere, a seventy-year-old man visualized the most revolutionary possibility in the history of science. When he woke up, Godin telephoned John Skow, a deputy director of the NSA, in Fort Meade, Maryland. By six A.M., the two men had drafted and delivered a let¬ter to the president of the United States. That letter shook the White House to its foundations. I know this because the president was my brother's close friend in college. My brother died three years ago, but because of him, the president knew of my work, which is what put me in the middle of all that followed."

I rubbed the cool metal of the.38, wondering what to tell and what to leave out. Leave out nothing, said a voice in my head. My father's voice. Fifty years ago, he'd played his own part in America 's secret history, and that burden had greatly shortened his days. My father died in 1988, a haunted man, certain that the Cold War he'd spent his youthful energy to perpetuate would end with the destruction of civilization, as it so easily could have. Leave out nothing…

"The Godin Memo," I continued, "had the same effect as the letter Albert Einstein sent President Roosevelt at the beginning of World War Two, outlining the potential for an atomic bomb and the possibility that Nazi Germany might develop one. Einstein's letter spurred the Manhattan Project, the secret quest to ensure that America would be the first to possess nuclear weapons. Peter Godin's letter resulted in a project of similar scope but infinitely greater ambition. Project Trinity began behind the walls of an NSA front corpora¬tion in the Research Triangle Park of North Carolina. Only six people on the planet ever had full knowledge of Trinity. Now that Andrew Fielding is dead, only five remain. I'm one. The other four are Peter Godin, John Skow, Ravi Nara-"

I bolted to my feet with the.38 in my hand. Someone was rapping on my front door. Through thin curtains, I saw a Federal Express truck parked at the foot of my sidewalk. What I couldn't see was the space immediately in front of my door.