For folks that are new to Karin Slaughter, her books are more police procedural than mystery. She is excellent at developing characters and her plot is always well formed. If you are not familiar with the characters Will, Sara or Lena then I suggest you read some of her previous works and this title will make more sense however her stand alone books and her series are so entertaining and well written. This one was no different for me, I loved how we got to see Sara and Will's relationship progress further. Five stars from me.