The lost man / Jane Harper.

Brothers Nathan and Bub Bright meet for the first time in months at the remote fence line separating their cattle ranches in the lonely outback. Their third brother, Cameron, lies dead at their feet. In an isolated belt of Australia, their homes a three-hour drive apart, the brothers were one another's nearest neighbors. Cameron was the middle child, the one who ran the family homestead. But something made him head out alone under the unrelenting sun. Nathan, Bub and Nathan's son return to Cameron's ranch and to those left behind by his passing: his wife, his daughters, and his mother, as well as their long-time employee and two recently hired seasonal workers. While they grieve Cameron's loss, suspicion starts to take hold, and Nathan is forced to examine secrets the family would rather leave in the past. Because if someone forced Cameron to his death, the isolation of the outback leaves few suspects.