So I'm asking you one more time to keep the secrets and let audiences enjoy Cursed Child with all the surprises that we've got to the story."
The anticipation has been building for months, not least among its stars, including Jamie Parker, the 36-year-old actor who plays Potter.
"These are stories that people have lived with for their whole lives, they've grown up with and now they're adults re-joining the tale, picking it up where they left off -- and I'm one of them," he told the official Pottermore website.