Castle of Dreams and the Blue Butterfly is the second book in the chapter book series; Castle of Dreams This book is a new adventure of our main characters, Megan and Prince Samuel. The book introduces many new characters, Thomas, who travels back in time and becomes closely tied to Prince Samuel and Megan. The first book in the series, Castle of Dreams and the Dragon Princess provides the background and foundation for the adventures our main characters will be experiencing through-out the chapter book series.