In his new novel, "Nightwoods" (Random House/2011), acclaimed writer Charles Frazier returns to the familiar setting of North Carolina's Appalachian mountains. This time, the action takes place in the 20th century, instead of the 19th, but some familiar themes run through all of Frazier's works. As in "Cold Mountain" and "Thirteen Moons," characters are defined in part by their relationship to the land and their quest for peace in the face of violence.