I really liked the sound of this - a young, female, Amish detective who has very good reason to believe a serial killer is dead, faces a moral dilemma when he appears to be striking again. The book has all the components of a thriller of this kind - heroine with a dark secret, a damaged 'rogue' police officer with a heart of gold, plenty of atmospheric landscape, some descriptions of murder and victims that were very visceral (I actually nearly didn't read the book after a really disturbing opening), the pressure to find the killer before he strikes again etc. And some of the writing is very good indeed.
But as a book, it just didn't make it for me mainly because the main characters were too two dimensional and formulaic. It felt as if the author had read a 'how to write a thriller about a serial killer' book and then taken its advice word for word. The main character's back story (the dark secret) was, in my opinion, far too far-fetched and I couldn't empathise with her at all because of this.
It's a good way to pass a few hours, an undemanding read and typical of its genre. So if that sounds like your cup of tea, enjoy!