The Tripod Trilogy Boxed Set

Slipcase notes: "A compelling science fiction saga set a hundred years from now, when the world has been enslaved by Tripods and their interplanetary Masters. Young Will Parker flees from England to Switzerland to join a small band of 'free' people who have escaped the brain-numbing rite of 'capping,' the Masters' sinister method of mind control. In a hidden valley amid the White Mountains, they devise a clever and perilous plan to destroy the Masters' three great cities before a space ship destined to doom the planet arrives."