With his release imminent, Knight seems more unsettled than ever. He scratches furiously at his knees. Jail, he's realized, might not be all bad. There's routine and order in jail, and he's able to click into a survival mode that is not too dissimilar, in terms of steeliness of mental state, to the one he'd perfected during winters in the woods. "I'm surrounded in here by less than desirable people," he says, "but at least I wasn't thrown into the waters of society and expected to swim.

Michael Finkel