Chapters 15 through 18 Summary

In chapter fifteen, Trey unconsciously clutches his false identity card, the only thing between him and death at the hands of the Population Police. Mark admits that he'd tried to talk the boy out of joining the Population Police and Trey becomes upset and runs away. At the back of the property, Mark discovers all the workers are gone and decides to go through the fence. Mark drops his backpack and starts to climb through the fence. He suddenly begins to spasm and Trey uses a stick to shove him off the fence, only then realizing the fence had been electrified. Four uniformed men arrive and take Mark away. Trey, hiding nearby, is again alone.

In chapter sixteen, Trey doesn't know what to do. He thinks back to a chess game he's played with his father in which he'd used a...