 Killer of Enemies by Joseph Brushak. Part Apache, Lozen, 17, is skilled at killing the giant genetically engineered monsters that roam the countryside. She has some extra sensory abilities, the same as her warrior woman ancestor, and she carries that ancestor's name as well. Ever since the cloud came and caused most all machinery to quit, the world has been a different place. Her mother, brother, and sister are being held by the Four Heads of Haven, a former prison now being used to keep the monsters out, and the slaves in. If she can survive, Lozen plans to rescue her family. Killer of Enemies by Joseph Brushak.