By Jessica Goodman
June 06, 2016 at 12:40 PM EDT

Preview performances of Harry Potter and the Cursed Child hit London’s Palace Theatre this week, and author J.K. Rowling has one message for fans: don’t spoil the plot.

In a video posted to the Cursed Child YouTube account, Rowling asked fans to keep the play’s plot under wraps as a way maintain the mystery for everyone else. “You’ve been amazing for years at keeping Harry Potter secrets so you didn’t spoil the books for readers who came after you,” she said. “So I’m asking you one more time to keep secrets and let audiences enjoy Cursed Child with all the surprises we’ve built into the story. Thank you.”

She tweeted the clip as well in a series of tweets about spoilers:

Rowling also reminded fans that who may not see the play soon will be able to purchase the play’s script on July 31 (Harry Potter’s birthday).

Set 19 years after the Deathly Hallows, Cursed Child‘s official synopsis is vague: “While Harry grapples with a past that refuses to stay where it belongs, his youngest son Albus must struggle with the weight of a family legacy he never wanted. As past and present fuse ominously, both father and son learn the uncomfortable truth: sometimes, darkness comes from unexpected places.”

Though the plot could be anything, the production revealed character portraits last week. Catch up on all of them — including an adult Harry Potter, Ginny, Ron, and Hermione by heading here.

  • Stage
  • 04/22/18
  • Sam Clemmett,
  • Anthony Boyle,
  • Jamie Parker,
  • Noma Dumezweni
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