Game Of Thrones Season 7: 10 Ups And 3 Downs From 'Beyond The Wall'

6. The Wights Attack

The whole purpose of the mission was to capture a wight, and they actually got one fairly quickly, managing to tie it down but not keep it quiet.

It was never going to be easy, and a handful of wights turns into uncountable numbers as death comes for our heroes. It allows for a thrilling sequence with a few heart-in-mouth moments as the Westeros Avengers are backed onto a lake and desperately fight for survival.

It once again sees the show proving how well it can do zombie action (though it's not quite as well shot as Hardhome), and provides a lot of the episode's excitement.

What's really important here, though, is that the rules have seemingly changed. It's not just fire that kills wights, but Valyrian steel and dragonglass - and a war-hammer seems to at least do some serious damage too - and, even more crucially, that killing the White Walker who made them kills all the wights (presumably the one they captured just happened to be different from those around it).

It's similar to another epic work of fiction (which will be coming to screens one day), The Passage, with the White Walkers becoming The Twelve. And the one that really matters is the Night King (Zero, in this comparison), and this (and a later moment) really establishes why he's so important. This was a big episode in terms of the series' endgame, and we got some vital new information for that.