Levin Davis has it made. At 20, he's a college graduate with a dream job, a beautiful girlfriend, and a life that can only get better - until he receives a mysterious letter suggesting his long-dead father is alive and hiding an extraordinary secret. Distraught, Levin meets the letter's author, who could pass for his twin. The stranger claims to be part of a genetically engineered race designed to survive global catastrophes and rebuild society,...