The Fallen Man by Tony Hillerman (Leaphorn & Chee Series #12)

The fallen man lay sprawled on a ledge under the peak of Ship Rock mountain for eleven years - visited only by the ravens that had picked his bones clean and scattered his rock-climbing gear. That peaceful period ended, appropriately, on Halloween, when a climbing party stumbled upon his bones and began a chain of events that would ultimately link Leaphorn and Chee.At Canyon de Chelly, three hundred miles across the Navajo reservation, a sniper on the rim shoots an old canyon guide who had always walked the 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.In Washington, the trustee of a mining mogul's estate learns of the skeleton and makes Leaphorn an offer.In his office at Shiprock, Acting Lieutenant Jim Chee is too busy with paperwork and cattle thefts to take much interest in the case - until he learns the woman he will soon marry is more interest