A top nuclear scientist goes mad and takes an innocent family hostage at gunpoint, killing one and causing a massive standoff.A plume of radiation above New York City leads to a warehouse where, it seems, a powerful nuclear bomb was assembled just hours before.Sifting through the evidence, authorities determine that the unthinkable is about to happen: in ten days, a major American city will be vaporized by a terrorist attack.Ten days. And Gideon Crew, tracking the mysterious terrorist cell from the suburbs of New York to the mountains of New Mexico, learns the end may be something worse--far worse--than mere Armageddon.