"Jack Four is one of twenty human clones, created to be sold. His purchaser is the alien prador kind, who wants to chain his mind, then use him for battle. But there's something different about Jack. No clone should possess the secrets hidden in his head -- and they could help him escape. The prador king has been mutated by the Spatterjay virus, and it's made him even more monstrous than the rest of his kind. However, the prador will use any weapon against humanity -- even a truce with the Polity -- so they've infected a human. Now this experiment has broken free to rampage through the king's ship. Jack will have to tackle the prador and this mutation to break out. But he craves revenge as much as freedom. He's resolved to take down the slave who sold him -- and soon he's a man with a plan and a missile launcher. What could possibly go wrong?"-- Provided by publisher.