The basic plot, involving a gang rape of a mentally challenged Indian girl, is drawn from the first Longmire novel "Cold Dish." Many details have been changed.
At the end of the episode when Branch is waiting to see Jacob Nighthorse he sees a Dog Soldier headdress which is a direct reference to the episode "Dog Soldier" in which the end scene is Jacob Nighthorse in full dog soldier leather nailing himself to the earth underneath a full moon as a traditional dog soldier would.