I thought this series started off really strong with an interesting mystery, but now at book 4 the series feel stalled. I had hoped that by the end of this book there would be some actual information about Sutton's killer, and this wouldn't follow the exact same formula of the previous books where Emma totally knows the killer is XXXXX and there are a tons of vague hints but then they turn out innocent in the end. There are so many plot points to explore after Emma finds the killer (how does she come out as Sutton's sister, how do they deal with the killer etc) not to mention subplot mysteries. Just unmask the stupid killer already, these books are getting boring.