More Potter? Or more ghosts?

J.K. Rowling says Harry Potter is over now. Or is she taking the first step toward become the next James Patterson Factory?

'It's been almost 20 years since he made his debut, but it turns out J.K. Rowling’s Harry Potter still has that magic touch. 

'The new book, “Harry Potter and the Cursed Child,” sold more than 3.3 million copies in the U.S. and Canada, publisher Scholastic announced Wednesday. More than half of those sales, 2 million books, took place in the first two days of its release. 

'"Harry Potter and the Cursed Child, Parts One and Two" is markedly different from the seven books that preceded it. It's not a novel, but rather the script to a play that's currently being performed in London's West End. 

'It's the only "Harry Potter" story so far that wasn't written solely by Rowling. The script was written by Jack Thorne, based on a story he wrote with Rowling and John Tiffany...'