This is the latest book in the series. It starts with a barn that burns down. Chief Kate Burkholder goes to investigate and they discover that an Amish teenager was burned alive inside the barn. But the more she digs into the homicide, she realizes that the teen was not who he seemed. 

What I like about these books is that the author describes the Amish culture and how they interact with the "English" culture. The dynamics are a very interesting addition to a typical mystery book. This story was a page-turner but there was some description of sexual assault, so it might not be for everyone.