Now he’s back to helm this week’s sixth episode, “Beyond the Wall.”
What’s it like coming back into this?It’s been surreal in so many ways.
It’s all gotten so much bigger.

Credit: HBO
Now we’re shooting with green screens all the time here.
I guess there’s more money, but the dragons have also gotten bigger and armies have gotten bigger.
So you spend a lot of time in visual effects land.
Also, the cast have become famous since I was last here.
The kids have grown up.
And the cast has gotten so confident and so dependable, which makes things easier.
The creature was designed by WETA.
It’s my understanding David and Dan have wanted to do [the bear attack] for quite awhile.
It kept landing in various episodes.
It’s incredibly daunting.
So we’re once again shooting in a quarry and the transformation they’ve done is amazing.
But then there are more visual effects on top of that.
This is six-to-eight guys stuck on a tiny rock and trying to bring some life into that.
Every character on the island is a major character with a long story and relationship with the audience.
You care about each of these guys.
We’re trying to find little moments to make it feel intimate and connected.
If you kill a main character, like chopping off Ned Stark’s head, people are upset.
But if you kill a dog [viewers tend to be even more upset].
Game of Thronesairs Sundays on HBO.