Episode 4 debuts tonight, titled Book of the Stranger! 9 PM EST

Official Episode preview.

Iron Islands, the Vale, somewhere in the North, King's Landing, Mereen, Vaes Dothrak appear to be featured.

No clips of Jon, the Night's Watch, Arya, Braavos, or Dorne featured. Speculate away!

I'm personally excited to see more of Lord Yohn Royce and the Vale. They've been untouched by war, have full, rested armies, and primed for a major role. Will Littlefinger hoodwink the Vale from its lords?