In an exclusive interview, the people who will publish the fifth Potter book in the UK - Bloomsbury - told us security surrounding the manuscript was very tight.
It is also still being edited by Emma Matthewson, who worked on the last three books in the series.
Emma is one of the only two people lucky enough to have the read the story so far.
Hear story
Book five: What happens now?
Email: your book 5 predictions?
