Watch How Stranger Things’ ‘Running Up That Hill’ Scene Was Created

I’m a little bummed that the video doesn’t talk about the Kate Bush song, whether or not it was used on set, or anything like that. But it is certainly a surprise just how much of that sequence was practical versus digital. The dead bodies, the staircase, the bloody floor, all real. And, of course, Vecna is real, played by—well, we wouldn’t want to spoil it if you haven’t seen all of Stranger Things Vol. 4 yet. In either case, the actor was actually there in a suit.

The second half of this season, which is really just two long episodes, is out Friday and we’ll finally see if the kids from Hawkins can take Vecna down. Plus, if they do, what’s going to happen in the fifth and final season? Hopefully there’s a tease.

And since this sequence has become the standout scene in the entire season (so far), Netflix also got the cast together to react to it in real time, which is a fun little video. Watch that below.

Stranger Things Vol. 4 Part 2 is out Friday.

Want more io9 news? Check out when to expect the latest Marvel and Star Wars releases, what’s next for the DC Universe on film and TV, and everything you need to know about House of the Dragon and Lord of the Rings: The Rings of Power.