An excellent post-apocolyptic novel with a memorable reluctant hero who has stumbled upon awful secrets. I enjoyed it very much.
Here's what the back says:
Silver Island was a place out of legend, the chosen citadel where the government began building a new and better America from the ashes of a war-ravaged land. And lucky indeed were the specially Chosen children sent to Silver Island to help build a new world.
That was what Howie Ryder had been told when his little sister, Carolee, became one of the Chosen. But that was six years ago, before the soldiers came and slaughtered his parents, leaving Howie to make it on his own in a land where people shot first and asked no questions of the dead. Now Howie knows the horrifying truth about Silver Island and he'll do anything to rescue his sister from its terrifying doom - if she is still alive. Although Silver Island is devastated when he finally reaches it, his search for Carolee and for revenge will go on...even if it leads him to a discovery more terrible and dangerous than the secret of Silver Island.