Awaken Me Darkly (Alien Huntress, Book 1) by Gena Showalter
A thorougly enjoyable read! Usually I try to read a series in order, but I've read the two YA books in this series - Red Handed and Black Listed - and enjoyed them, so I finally decided to go back and start the series from the beginning.
This book is definitely NOT Young Adult! There are some pretty steamy sex scenes and a lot of violence, so I think it's very interesting to see a series that mixes genres this way.
In this book, the main character is Mia Snow who works for A.I.R. - a group who is dedicated to hunting aliens who have commited a crime. She's part of a group who is investigating the murder of several men, and during the investigation, she discovers a lot more than just who the murderer is!
I can't wait to read the next one - and luckily I have it here :)