The Five Worlds - The Arizona Series, #6

Guy Thornton's dreams for his new ranch on the outskirts of the small, southern Arizona town of Sonoita have hit an impasse: his wife is away in Tucson caring for her ailing father; his Yaqui housekeeper is busy participating in her tribe's 40-day Lenten observances; and JC, the troubled teenager entrusted to him, has gone missing. When Guy's son, Trick, rides out to investigate, he encounters the unknowable worlds of the Surem, the ancient Yaqui spirits who trouble and assist lost travelers, and returns bloodied, confused, and empty-handed.
So Jasmine, Trick's former classmate, tries to help Guy locate JC. Their search leads them into the dangerous world of drug traffickers along the Mexican border. Book Six of The Arizona Series-novels intertwining Native American mythologies with western/adventure/romances set in the modern American West.