Grave consequences : a Charlie Henry mystery
(Book)

Series information from FantasticFiction.com

"Just as Charlie Henry thinks life might have calmed down, he finds himself in the middle of a dangerous case involving a beautiful silver-and-turquoise necklace with a mysterious history. When a young Navajo man shows up at FOB Pawn, claiming the necklace is a family heirloom of his girlfriend, Charlie is skeptical. No claim ticket, no exchange. But when the same young man returns with reinforcements--and guns--it's clear that there's more to his story than originally appears. This necklace quickly becomes the focus of a case where no one seems to be telling the truth, and where everyone seems to answer with gunfire. Also on the case is Charlie's semi-estranged (and recovering alcoholic) brother, Alfred, a tribal cop working undercover, who's attempting to infiltrate one of the gangs involved with the shooting. Eventually, the necklace is identified as the work of a Navajo silversmith, who was recently killed, and this piece of jewelry was buried with him. And while highly taboo in the Navajo culture, it appears that someone has robbed this man's grave. Now there are multiple parties trying to get their hands on the necklace--for what ill-gotten gains, no one knows. And it's up to Charlie and his comrades-in-arms to help find out who's really telling the truth, and uncover the mysteries that this heirloom holds"--