So good. Giddy with excitement, oh no you didn‘t oh yes you did, I want more please don‘t let the book end good. Fantastic worldbuilding, fascinating magic system built around the manipulation of glass & magic as a finite resource, complex, flawed characters, not to mention secrets, lies, betrayal, conspiracy & that‘s just the tip of the iceberg. A few aspects are a little neat & tidy but I can‘t wait for the next book! Excellent start to finish.