Miguel Alonzo, a Mexican American Navajo Police Officer on the Twin Rivers Reservation, finds himself entangled in a lethal web of ancient cultures and modern legal jurisdictions when he attempts to find the brutal killer(s) of Lodge and Katy Tom. On the cultural level, Fabriano Tom, Lodge's grandfather and a Twin Rivers medicine man, believes that a skin walker-a person with other worldly abilities-has brought "bad blood" to the reservation, resulting in his grandson's death. To find the killer, Grandfather seeks the help of his ancestors in the ceremonial Hogan, invoking the Wall of Smoke....