Harry Potter fans rejoice, he's back, but if you'd like to see him, you'll have to apporate to London.

FOX's Simon Owen reports from London:

You could be forgiven for thinking Harry Potter was done, after all it's nine years since the final book was published. But tonight the wizard returns, a play based on a new story by JK Rowling debuting here in London: 'Harry Potter and the Cursed Child.'

Rowling asking audiences to keep quiet about what happens:

(Rowling) "You've been amazing for years at keeping Harry Potter secrets, so I'm asking you one more time to keep secrets."

The play comes with a controversial catch: it's in two parts, two separate trips to the theatre and crucially, that means buying two tickets.

In London, Simon Owen, FOX News.