On a different Earth, in a distant future, society has been divided into strict classes, with Perfect Laws to follow and guide them. The Perfect Compatability Test (PCT) has paired Earth's inhabitants with their Perfect Mates for over a thousand generations. At age eighteen, every citizen takes it. Refusal to do so is punishable by exile to the cold reaches of space or death. Most choose death.When Mayella, a senator's daughter, destined to become...