An Ice Cold Grave by Charlaine Harris
This is book 3 in the Harper Connelly series.
Harper is hired by the sheriff of a small town in North Carolina to help search for several missing young men.
When Harper locates the burial site of the six locals and two others, she is overwhelmed by the horror and violence she feels from their corpses. Dealing with her first case of a serial killer, she and Tolliver are sucked into the drama and intrigue that getting too close to the truth will bring. Meanwhile, they are dealing with their own drama and emotions and finally come to a decision that they can both agree upon.
Again, even though the crimes described are horrific, the writing is not so graphic that it becomes difficult to read. Harris is able to portray the scene without getting so detailed that I feel all creepy. She keeps it light and fun. It would be nice if she would quit giving us Harper and Tolliver's back-story (it's a series people, start at the beginning!) but I suppose she feels the need since some people will just pick up a book in the middle of the series and start from there.