Harry Potter and the Half-Blood Prince

British author JK Rowling poses with a copy of her new book "Harry Potter and the Half-Blood Prince" at Edinburgh Castle in Scotland July 15, 2005. The sixth book in the Harry Potter series is due to be released on July 16, with millions of copies already to stores around the world. For more information go to bbc Harry Potter in Depth in bbc. [photo: Mike Finn-kelcey - Reuters]