'Harry Potter and the Cursed Child' continues to crush sales

People still love Harry like J.K. Rowling loves owning people on Twitter. 
Harry Potter and the Cursed Child Parts One and Two, the eighth Harry Potter story by Rowling, John Tiffany and Jack Thorne, has sold more than 3.3 million copies in North America since its July 31 release, Scholastic announced Wednesday.
The script book remains at No. 1 on USA Today and New York Times bestseller lists, among others, and will likely be the top-selling book of the year. 
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