It was so interesting, especially after reading the end where the author talked about what was based on fact. I don't know much about the Shelley's so this made me interested in finding out more about them. I would definitely read more from this author.
My next book is Hemlock Grove, I just finished the show on Netflix, and enjoyed it so much. I can't wait for the next season. If you go to http://www.tor.com/stories/2012/03/read-an-exclusive-graphic-novel-prequel-to-new-horror-series-hemlock-grove you can read the prequel.
