The Reaping - The Burn, #3

The government is on the verge of perfecting the loyalty serum, and Terra knows exactly what that means-the agents will have absolute control. Terra has survived the labor camp, the agents, and the soldiers who hound her as she brings nomads to the water's edge. But now she faces her most daunting challenge yet: she must return to the colony to ask the council-and her father-to help her destroy the loyalty serum.
With the aid of old friends and unexpected allies, Terra races toward a confrontation that will decide her fate on the Burn forever.