In this thriller from authors Douglas Preston and Lincoln Child, a genetically engineered virus threatens to wipe out humanity Mount Dragon: an enigmatic research complex hidden in the vast desert of New Mexico. Guy Carson and Susana Cabeza de Vaca have come to Mount Dragon to work shoulder to shoulder with some of the greatest scientific minds on the planet. Led by visionary genius Brent Scopes, their secret goal is a medical breakthrough that promises to bring incalculable benefits to the human race. But while Scopes believes he is leading the way to a new world order, he may in fact be opening the door to mass human extinction. And when Guy and Susana attempt to stop him they find themselves locked in a frightening battle with Scopes, his henchmen, and the apocalyptic nightmare that science has unleashed . . .