GAME OF THRONES: PAGE TO SCREEN S7:E1

Stay tuned.

Yes, the show is mainly in new territory, but there are still a few bits and pieces still in the book universe, appearing on screen.  there have also been several chapters from The Winds of Winter that have been released, that we can draw from.

Overall, wonderful episode.  More thoughts after a re-watch this evening, including the super-bone-able Euron.