Faithless: (Grant County series 5) by Karin Slaughter
There are many ways to die. But some are more terrifying than others...A walk in the woods takes a sinister turn for police chief Jeffrey Tolliver and medical examiner Sara Linton when they stumble across the body of a young girl. Incarcerated in the ground, all the initial evidence indicates that she has, quite literally, been scared to death. But as Sara embarks on the autopsy, something even more horrifying comes to light. Something which shocks even Sara. Detective Lena Adams, talented but increasingly troubled, is called in from vacation to help with the investigation - and the trail soon leads to the neighbouring county, an isolated community, and a terrible secret.