The Fallen Man — Tony Hillerman

Sprawled on a ledge under the peak of Ship Rock mountain for eleven years lies an unknown body, now only bones. At Canyon de Chelly, three hundred miles across the Navajo reservation, a sniper shoots an old canyon guide who had always walked that pollen path in peace. At his home in Window Rock, Joe Leaphorn, newly retired from the Navajo Tribal Police, connects skeleton and sniper, and remembers an old puzzle he could never solve. At his office in Shiprock, Acting Lieutenant Jim Chee is too busy to take much interest in the case until it hits too close to home.