I ended up skimming most of this one after about page 30. I couldn't get into the storyline and Kleypas seemed to be extremely heavy handed with her foreshadowing. Plus, Hannah (the heroine) was annoying me to death with her self-righteous attitude in the beginning and then her martyr complex towards the end.
Also, most of story between Hannah and Rafe was sacrificed to make way for a gratuitous amount of fan service featuring all the couples from the main books in the series. If you're a huge fan of Kleypas' Wallflower series, you'll probably enjoy this one. If you're not, I would skip it.