Innocence and Evil. One cannot exist when the other is present. The friendliness and support of an isolated small town by the snowy mountains seems ideal. Especially for a small boy with everything he needs right there, meaning his father. As he navigates the characters of his tiny home, his head is firmly attuned to the good, again his father, who he hero-worships.
Kevin, that is the boy's name, wants to do good, only good. He is warned by two jailbirds to 'grow up like his father' and he does listen. So innocence exists in small towns and small boys. But where does evil live? Is it in the snow-capped peaks of the mountains, two jailbirds named Chester and Lorne or is it right behind that old locked door that Kevin finds.