Alan Christoffersen, a once-successful advertising executive, wakes one morning to find himself injured, alone, and confined to a hospital bed in Spokane, Washington. Sixteen days earlier, reeling from the sudden loss of his wife, his home, and his business, Alan left everything he knew behind and set off on an extraordinary cross-country journey. Carrying only a backpack, he planned to walk to Key West, the farthest destination on his map. But a...