Even though Digger moves about America during "Footprints in the Snow," the focus is not on the physical movements, but on progress of his mind. Throughout the Digger stories, he has a sardonic sense of humor: "Thinking takes time. At least it does for me," he says in "The Worst Day of My Life." In "Footprints in the Snow," he at first displays this sense of humor, noting that he had only been nicked by a few bites during his night walks in The Yard: "Well, if these were the dark and dangerous forces that were going to get me, they were doing a pretty feeble job of it," he notes. During the story, his tone changes. There has been bitterness in his narration throughout Night Terrors, but in "Footprints in the Snow," the bitterness gradually overwhelms the humor. His descriptions become sharp and poetic: "I...