Grace heads an investigation when a body is discovered in a shallow grave in an apparent Native American burial ritual. She seeks insight from her Native American grandfather, but grows concerned when he displays signs of Alzheimer's disease.

A case turns personal for Grace when the murder of a young woman is chillingly reminiscent of a crime 11 years earlier. Meanwhile, Rhetta continues her quest to learn more about the otherworldly Earl by collecting physical items the angel leaves behind.