This book definitely had a few surprises and clever moments. I also like the main character, Mercy. She's not the strongest fighter, but she is pretty smart and can handle herself well in a crazy situation. 
 The world that was created is pretty neat. Werewolves, vampires, gremlins, witches, and other "fae" are living in modern day society. Some are in hiding, and the ones that have been exposed are treated as second class citizens.