This book was a pleasant surprise for me. The basic plot of the story, taken on its own, isn't something I would usually really buy into (otherworldly portals, steamy angel romance, what's new?), but Laini Taylor's writing is so unique and fresh that my doubts were soon cast aside. Taylor's prose is full of unusual and surprising delights, and she vividly and hauntingly depicts the strange and supernatural. I also enjoyed the various international real-world settings, which added a flavor not usually found in YA fantasy. 
 I listened to the audiobook, and while the narration by Khristine Hvam is truly masterfully done, I found myself wanting to see Taylor's writing on the page. So when I eventually read the second book in this series, I will do so in print format.