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20 Best-Selling Children’s Books of All Time


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"Harry Potter and the Half-Blood Prince"
Harry Potter and the Half-Blood Prince
Harry Potter and the Half-Blood Prince
Image courtesy of Scholastic

Author: J.K. Rowling

Hardcover/Paperback Sold: 65 million

The sixth book in the series focuses on the split in the Wizardring world as the war with the evil Lord Voldemort begins. Harry, along with Dumbledore, feverishly tries to unmask the complex story of Tom Riddle, the boy who becomes the evil Lord.