Predator: Race War — Andrew H. Vachss

From the Arctic Circle to the equatorial jungles -- from the most isolated wilderness to the overpopulated city -- any place can be a hunting ground. It all depends on your choice of game. For Predator, that game is man, so he heads to the grounds with the biggest trophies: the Palo Verde State Penitentiary. They say that when you kill a killer, all his kills belong to you, and Predator's looking to rack up the big numbers.