Shade's children

Garth Nix

The Key to Survival Rests in the Hands of Shade's Children In a futuristic urban wasteland, evil Overlords have decreed that no child shall live a day past his fourteenth birthday. On that Sad Birthday, the child is the object of an obscene harvest resulting in the construction of a machinelike creature whose sole purpose is to kill. The mysterious Shade — once a man, but now more like the machines he fights — recruits the few children fortunate enough to escape. With luck, cunning, and skill, four of Shade's children come closer than any to discovering the source of the Overlords' power — and the key to their downfall. But the closer the children get, the more ruthless Shade seems to become...