Hillerman - Dieu-qui-parle

Blurb

Talking God is the ninth crime fiction novel in the Joe Leaphorn / Jim Chee Navajo Tribal Police series by Tony Hillerman published in 1989.
One murdered man near Gallup and the desecration of a Northeastern cemetery, protesting ineffectively the keeping of native American bones in the Smithsonian, lead Leaphorn and Chee, separately, to Washington D.C. to solve interlinked crimes and preserve Navajo cultural artifacts.