The deathmaker was a small device, no larger than a heart patient's pacemaker. But it had the power to kill millions.

Knox Warnow, ex-U.S. atomic scientist, knew this. He had the device implanted in his chest. He also knew that if his heart stopped beating, the bombs that he'd planted across America would automatically explode. New York, Chicago, Washington, San Francisco, and L.A. would be wiped off the face of this world.

Nick Carter didn't know, and his assignment was to assassinate Knox Warnow. By the time Nick discovered Warnow's deadly secret, it was going to be much too late.