From the cover: 1999 - America Writhed in the vice-like grip of her merciless conquerors. The enemy had a brilliantly conceived, seemingly foolproof weapon for domination. Every month the entire population had to report for a booster shot against a terrible plaque—without it death was instantaneous. But one group of courageous men and women guessed the enemy's most closely guarded secret—a secret that could be turned into a weapon for freedom. Slowly but relentlessly they were devising a plan of revolt so daring that it defied belief—a plan that included the establishment of the first space station on the planet Mars.