I read on some page this morning that the episode was supposed to reference Big Little Lies. Which would make it the second HBO show referenced.They said each episode would homage a different witch-related story or movie. There was a bit of Hansel and Gretel here, but were the style of the house and the wardrobe change meant to evoke any particular production?
I watched all three episodes over the last couple of days. This season is pretty neat for me because Fantastic Four 185 and 186, which had the first appearances of Nick Scratch and Salem's Seven, were the first Fantastic Four comics I bought off the rack with my own money. I read them so much as a kid that they fell apart.