The Brothers McKay by Craig Johnson

Sheriff Walt Longmire returns to investigate the murder of one of the most despised men in Absaroka County, where a family divided by old grudges and hidden secrets leaves no shortage of suspects. As the investigation deepens, a second death and a raging wildfire raise the stakes, forcing Longmire into a race against both a ruthless killer and the unforgiving Wyoming wilderness. A compelling blend of mystery, suspense, and Western storytelling from one of the genre's finest authors