11. Where Are Hap And The Other Captives?
The first season spent a lot of time introducing us to the characters of Prairie's story, saying hello to Jason Isaacs' Hap, and fellow captives Homer, Rachel, Renata, and Scott.
All of them were being held there, and only Prairie and Homer learned the fifth movement. Hap later dumps Prairie by the side of the road, and presumably heads back to the house.
Since this is where Prairie left them behind, it's where we leave them too. This means we don't know what happens to any of them. Did they manage to escape? Is Hap still experimenting on them? Are they now in an alternate dimension?