"Rot & Ruin" by Jonathan Maberry
It's fourteen years after the zombie outbreak that ended the world as it was known and most humans who survived live behind fences in small settlements. Outside the fences lies the great Rot and Ruin, a place where zombies roam free and there are no rules. Fifteen-year-old Benny Imura lives in the Mountainside settlement with his brother Tom, a zombie hunter. Benny holds a grudge against Tom that goes back to the First Night when they lost their parents. Now he is at the age where he has to find a job or else he risks losing a portion of his rations and after trying various jobs around the settlement, he reluctantly decides to join Tom in the family business. But life in the Rot and Ruin is not what Benny thought it was at all. Tom reveals a world where zombies are not monsters but people. He also reveals a world where the heroes of the settlement, the zombie hunters, are immoral thugs who kidnap children and hunt zombies for sport. When B...