Is there absolutely ANYTHING else you can tell us about Ninth House? And will you return to the grishaverse after the duology?

I can tell you is that Ninth House 

is fantasy but set in our world, at Yale University
it focuses on the secret societies as repositories of arcane magic

I was in a secret society

if you go to my instagram (Lbardugo) you can see some pics of my research trip

My first trip back to the Grishaverse will be an illustrated collection of original fairytales called The Language of Thorns that comes out in September. As for future Grishaverse novels… more news to come later this year :)