We're getting down to the magical hour! The sixth book in the Harry Potter series goes on sale at midnight! The book is called "Harry Potter and the Half-Blood Prince." Several East Texas bookstores are having pre-sale parties. Books-A-Million in Longview at 5 p.m.; Barnes & Nobles' in Tyler at 9 p.m.; and Hastings in Longview and Tyler at 10 p.m.