JK Rowling is to make her screenwriting debut for a Harry Potter spin-off film based on a minor character in the series.
Fantastic Beasts and Where to Find Them will feature fictitious author Newt Scamander, writer of the Hogwarts textbook of the same name.
Rowling made the decision when she was asked by Warner Bros for permission to create the film.
She said: "As I considered Warners' proposal, an idea took shape that I couldn't dislodge. That is how I ended up pitching my own idea for a film to Warner Bros."
It's not the only project the author has taken on since completing the Potter series - Rowling has since released two novels.