Another average book. 
 Let's talk about characters. Lily was mostly okay, but she was supposed to be smart detective and I didn't saw that. She couldn't solve the case. It kind of solved itself in the end. Now about Rule. Can't say much about him, because Lily's cat - Dirty Harry - had more personality than Rule. All characters were two-dimensional and reacted like they were on Xanax. 
 As I understand it, this book was supposed to be paranormal mystery/romance. There hardly was paranormal part. The series name is "World of the Lupi", so it is expected to be focused on werewolves. But we barely see them at all. Except for Rule. And he had changed only two times during the story. And it was very brief, like he simply put a new shirt. Nothing special here, move along! 
 Mystery part. It went good until in the middle of the book in one character POV we find out who the criminal is. I would understand if it changed action of main characters, turn events from finding out who is the bad guy to catching him. But nothing changed. They still were hitting the wall trying to find out who is behind it. 
 It is like start books about Sherlock Holmes with "The killer is Mr.***. Enjoy your read now!". All the point in detective story is figuring out who is the villain step by step. I enjoy solve mystery with heroes and not watching them open one door at a time, while I know what they will find in the end. Where is intrigue? Where is fun in it? 
 The romance part was better. It was what made me keep reading. I only wish, that author described characters feelings regarding each other, than regarding situation there are in and their mating bond. 
 I can't say that it was all bad, it just couldn't deliver.