This book masterfully mixed so many different fantasy aspects, such as time travel, magic, fae, Highland setting, etc. The characters, Adrienne, Hawk, Grimm, Adam, were all engaging. Some because you hate them and others because you love them. 
 The only let down, is that Adrienne's resistance to Hawk seem so forced in the sense that her reasoning was so feeble. I understood her point to a degree, but it would have been more believable if her past was more concrete in her reason to hate "beautiful" men.