An interesting novella that would have been a good novel. The premise is that Canada has been annexed by the US and uses the near north to imprison "ThreeStrike" criminals behind an electric wall. The men must fend for themselves as they are left without any type of provisions aside from what they are allowed to bring in a small pack. A vehicle for debating the issues of incarceration vs. reforming criminals. Thought-provoking stuff, as usual from Peg Tittle.