If you got to the end of the second season of Stranger Things, there's a decent chance in one episode in particular stuck out in your mind.
We are, of course, talking about Chapter Seven: The Lost Sister, in which we find Eleven heading off to Chicago to find the other test subject from Hawkins Lab and discovers a small group of wounded punks who live near a trainyard and are breaking into people's houses for some unknown reason.
Calling it the weak link is an understatement - The Lost Sister was, by far, the worst episode of the season and it's been the subject of endless debate online as to why the Duffer Brothers felt it necessary to put into the show. Was it supposed to launch a spinoff series? Why was it needed in the first place?
In an interview with EW, the creators defended the episode and said that it was, above all else, "necessary."
"Our test of the episode was we tried to pull it out of the show just to make sure that we needed it because I didn’t want it in there as filler — even though some critics are accusing us of doing that. But Eleven’s journey kind of fell apart, like the ending didn’t work, without it."
Regardless, the episode has been singled out as one of the most disliked episodes in the season - but they're sticking by it. "Whether it works for people or not, it allows us to experiment a little bit," said Ross and Matt Duffer.
What did you think? Was it as bad as everyone said it was? Let us know in the comments!