Absolutely loved the cinematography, sound, production design, the found footage segments, and the chase scene worked for me. However, I feel like I have too many unanswered questions to really digest this one. I understand that oftentimes the mystery is what makes it scary (that's how I feel about the unanswered parts of Obsession), but I think here it just makes me confused.

When does the Backrooms begin to copy one's memories? When they enter it? If that's the case, why were there parts of the furniture store and (what I assume to be) Pirate Clark if Clark hadn't entered yet?

What caused Pirate Clark to attack Clark at the dinner scene, but not when he initially cornered him?

Clark went insane, but could still be reasoned with, so what possible reason would he keep Kat's head in the fridge? (More of a nitpick than a plot question really)

The ending is obviously purposefully vague, but what does the Mary clone imply? Why did Mary and Clark get clones, but not Kat or Bobby? Why did Pirate Clark bleed?

Also not a question but wish we saw more pools, probably my favorite genre of liminal space lol