4 1/2 stars. 
 I would be very frustrated right now if I didn't have Jekyll, an Urban Fantasy already loaded up & ready to read. Brutal cliffy, so I'll cut to the chase: 
 Loving this series. A departure from the usual spn/monster stories and unique plot. Well written and sexy as hell - it's the perfect mix of hotness and storytelling. A few things frustrated me at times, but they work themselves out and I was just overall impressed and easily pulled in. 
 Now, I have a sequel to begin devouring, and look for the review for that one to be much more informative. I usually emote more at the end of series, when I'm in the middle I just want to keep reading. 
 Bottom line: Read. It.