Eleven years have passed since SHEVA, an ancient retrovirus, was discovered in human DNA—a retrovirus that caused mutations in the human genome and heralded the arrival of a new wave of genetically enhanced humans. Now these changed children have reached adolescence . . . and face a world that is outraged about their very existence. For these special youths, possessed of remarkable, advanced traits that mark a major turning point in human development, are also ticking time bombs harboring hosts ...