The hermit set out of camp at midnight, carrying his backpack and his bag of break-in tools, and threaded through the forest, rock to root to rock, every step memorized. Not a boot print left behind. It was cold and nearly moonless, a fine night for a raid, so he hiked about an hour to the Pine Tree summer camp, a few dozen cabins spread along the shoreline of North Pond in central Maine. With an expert twist of a screwdriver, he popped open a door of the dining hall and slipped inside, scanning the pantry shelves with his penlight.