[Back Cover] The Cobellans had conquered Earth by killing almost everyone. The few survivors weaponless griefstricken and disorganized were no match for the invaders. A few straggling bands of guerrilla fighters were allowed to survive only because the Cobellans wanted them to for propaganda purposes. Yet in the midst of the desolation one man saw a way out. It would take a gigantic bluff murder treachery and betrayal. If he won Earth would be free. If he lost...all of Earth would die with him."