Nearly ten years since the final book J.K. Rowling wrote for the franchise, a new installment, "Harry Potter and the Cursed Child," dropped at midnight.
The timing was fitting -- Sunday was Potter's birthday, and Rowling's.
Fans of the series flocked to bookstores around the world wearing wizard hats and capes to get their hands on a copy.
"It's time to go back to Hogwarts," tweeted one excited Potter reader.
Another tweet read, "If anyone tries to reach me and I don't answer in the next few weeks, don't worry! I'm back at Hogwarts."