When a one-kiloton Russian nuclear demolition bomb the size of a suitcase goes missing from a military depot near the Afghanistan border, the West sits up and takes notice. The bomb, code-named Joshua's Hammer, is coming to the United States. CIA Director of Operations Kirk McGarvey must discover how it will get there, where it will be detonated, and when this, the worst terrorist attack in the history of the United States, will happen.