On an Earth where conventional armies are powerless to defend against the devastation wrought by single assassins, the secret organisation known as SPIRAL exists to fight a shadow war against fanatics and rogue states of every creed and political persuasion. Remorseless, unstoppable, of every country and of none, SPIRAL conducts its covert operations throughout the world in a never-ending battle for humanity's survival.
Carter is a highly trained operative in the world's toughest secret service. However, his enemies are closing in and he will need to call on all his experience to survive to his next mission ... The world could depend on it.