It all started when Warner Bros. came to me with the suggestion of turning 'Fantastic Beasts and Where to Find Them' into a film. I thought it was a fun idea, but the idea of seeing Newt Scamander, the supposed author of 'Fantastic Beasts', realized by another writer was difficult. Having lived for so long in my fictional universe, I feel very protective of it and I already knew a lot about Newt. As hard-core Harry Potter fans will know, I liked him so much that I even married his grandson, Rolf, to one of my favourite characters from the Harry Potter series, Luna Lovegood.
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.
Fantastic Beasts and Where to Find Them is a magical zoology book mentioned in the first Harry Potter novel, and it generated so much interest among Harry Potter fans that it was published as a real book in 2001. It's 42 pages long, and can be found as a paper book on Amazon and other sites. You can also buy it as an ebook from Pottermore.
There are no details yet about the story, but I am hoping that the movie will stay true to the idea that this is supposed to be a zoology book. I would like to see the movie made as a documentary, but there's a good chance that I will be disappointed. Action movies sell better.