The Eighth Story. Nineteen Years Later. Readers and moviegoers last saw Harry Potter waving off his children at Platform 9 3/4 nineteen years after the Battle of Hogwarts. Harry Potter and the Cursed Child picks up after that moment, and it's officially the eighth story in the Harry Potter canon. Based on an original new story by J.K. Rowling, Jack Thorne and John Tiffany, Harry Potter and the Cursed Child is the new play by Jack Thorne that will open in London on July 30th. Now you can own the special Rehearsal Edition of the play in a handsome 320-page hardcover format and follow the adventures of Harry and his friends, even if you can't make it to the opening night of the play!