A new world has arrived… Underground Book Reviews 2015 Top Pick Award Synthetic stem cells mean no more organ failure, no more pharmaceuticals. No cancer. The human race is stronger and smarter. Is it better? Cali is a nanobiometric engineer who has been her younger brother's guardian since their parents died. She's lost too many people in her life to lose another. When the government declares the Halfskin Laws will shut down anyone with too many synthetics, she decides to hide him. Jamie wants to be a halfskin. Her days are dull and pointless. More synthetics would give her control of her life. She's already 49.9%. One more dose and she registers. Then she gets shutdown. But there is a way to hide. Paul is a brick. 100% synthetic. Only the Sentient Laws keep him alive. Life on the Settlement, however, is hardly living. He wants to escape, to return to a simpler life when he was organic. Imperfect. When he was clay. But that world is over. A new one is just beginning. Follow this twisting, slippery grip on reality as the human race battles for perfection only to discover a secret that is beyond anyone's imagination.