Abigail, who was supposed to have been cutthroat in a previous episode by her father, has no scar on her throat.
Will states that Joel Summers's spot atop the "totem pole" is a place of honor. Native cultures either reject any linear meaning for poles or place the most significant figure at the bottom. It is likely that both Will and the killer were unaware of this because outside Native pole-building cultures the belief that top = honored is pervasive.
West Virginia is a land locked state. There is no beach in Grafton, WV.