SPOILER ALERT
A complicated story of family, feuds, greed, identity. Rachel Goddard has moved to Mason County and bought a veterinarian clinic. Deputy Tom Bridger is interested in her, willing to wait her out as she tries to recover from her former trauma, being shot by a client who she turned in for mistreating his dog. Perry Nelson is now in a psychiatric hospital, and the doctors are advocating his limited release.
Tom is now thoroughly involved in the case of the disappearance of Pauline McClure, a case that his father was unable to solve. He is also recovering from the loss of his parents, his brother and wife in an auto accident while he was driving, during a storm. Bones have been found in the Blue Ridge foothills, and it turns out they are those of Pauline. But to complicate the case, a second skull is also found. Finally, a third skull will be located in the back of cave, which turn out to be that of Jean Turner, mother of Holly.
Rachel rescues Holly offering her job in her clinic. Holly's grandmother has been sheltering her and keeping her from repeating what she knows about the family. Her father Troy, whom her mother never married, Shackleford is a drug dealer. Holly and her family are Melungeon. Part white, Native American and Black, they are regarded as colored and experience racism and hatred by the whites of the community. Tom is also Melungeon. Pauline had married Adam McClure much to the McClure family's horror. Robert McClure begins a campaign to stop her from inheriting Adam's estate when he dies and is unsuccessful. He hated Pauline. Ed McClure, his brother was having an affair with her, and the rumors abound that Mary Lee is not his child. In fact, Mary Lee is the child of Jack and Bonnie Watford. They already had five children. Adam was sterile. So, they sold Mary Lee to Adam and Pauline. But Bonnie has had second thoughts about the transaction and wants Mary Lee back. Especially since her other daughter, Amy, is seduced by Pauline and their money. Bonnie sees Amy as being stolen by Pauline. She contracts for Pauline's murder, hiring Troy Shackleford, Holly's father. He takes the money not intending to kill her. But she is killed anyway. Jack and Bonnie come to the house. Bonnie kills Mary Lee, and Amy takes over her identity. Jack kills Pauline with an ax, and later when taking Jean to the bus to leave, he sees her get off the bus and head for the sheriff's office. He catches her and kills her. Holly was aware of what had happened. O'Dell who was roped into helping Troy bury the bodies, gets overexcited when he shoots Tom, and Troy kills him, afraid he will reveal what happened.
Both Holly and Rachel are put in jeopardy when everything begins to unravel. They are shot at. Then Amy shows up, as Mary Lee, and Holly recognizes her. The Watfords show up and Bonnie tries to embrace Amy. Tom has been called and arrives to save Rachel and Holly. It is then revealed that Holly is going to inherit the entire estate, as Pauline had willed the estate to Mary Lee, to go to Jean and Holly if they died at the same time, which happened.