Stephenie Meyer’s Twilight companion novel Midnight Sun has exceeded sales of one million copies in its first week in stores.The new book, a retelling of the supernatural love story from the point of Edward Cullen instead of Bella Swan, reached the total in North America after just one week, publisher Hachete Book Group and Little, Brown Books for Young Readers announced Thursday.The combined sales figure includes pre-orders, sales of print books, ebooks and audiobooks.