Anna Horn is always looking over her shoulder. For the bullies who torment her, for the entitled visitors at the reservation's casino, and for the nameless, disembodied entity that stalks her every step - an ancient tribal myth come-to-life. As girls begin to go missing and the tribe scrambles to find answers, Anna struggles with her place on the rez, searching for the key she's sure lies in the legends of her tribe's past. When Anna's own little sister also disappears, she'll do anything to bring Grace home. But the demons plaguing the reservation - both ancient and new - are strong, and sometimes, it's the stories that never get told that are the most important.