In Erdrich's new novel The Round House, justice isn't simple. When an Ojibwe woman gets assaulted, the tribal judge must answer difficult questions: Was the assailant white or Native? Did the attack take place on tribal land? Further complicating matters, the judge is married to the victim, and their 13-year-old son, Joe, who narrates with all the raw emotion and crude humor of a real teenager, wants to settle matters himself. It's a gripping mystery with a moral twist: Revenge might be the harshest punishment, but only for the victims. A-

