Sebastian Grey is hysterical. He is a great combination of charm, wit and conceit that he really makes the book. I laughed out loud when he starts writing and comments that the writing was so good that he could wait to find out what happens even though he's the one making up the story.
Also the bits here and there where the characters make fun of the books had me laughing and wondering if it was drawn from real life inspiration. The very end of the story parallels the improbability that was constantly mentioned throughout the book. And was just as entertaining in its improbability as was shamelessly declared throughout the book. I so loved it.
However, Sebastian and Annabel's relationship development seemed flat and was only a means to an end. Annabel's character was also overshadowed by Sebastian and eventually Lady Villers. Still, a very fun book.