The secret organization known as SPIRAL exists to fight a shadow war against fanatics and rogue states of every political persuasion. Remorseless, unstoppable, of every country and none, the organization conducts its covert operations throughout the world in an unending battle for humanity's survival. But now Carter, SPIRAL's toughest operative, is facing a new and terrifying challenge. The world is being held ransom by the creators of a new and devastating machine. One that is capable of wreaking seismic havoc, causing earthquakes and eruptions on a global scale. It must be destroyed—and Carter must do it alone. This is the riveting sequel to Andy Remic's Spiral.