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JK Rowling and her team keeping the Cursed Child secrets

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The first performances of the new play Harry Potter and the Cursed Child have taken place this week, so we caught up with JK Rowling to find out more.

The play takes place 19 years after the final book in the Potter series, and focuses on Harry, Hermione and Ron's children.

JK Rowling, John Tiffany the director, and Jack Thorne the writer, have been keeping very tight-lipped about what happens in the play.

So, BBC Arts Reporter and top class muggle Will Gompertz went to speak to them to see if he could find out more...