I can say from personal experience the Exorcist house definitely just had...something else about it. It was the last night I was going to be at the event, and my boyfriend had tapped out for the evening, so I decided to just get another solo run in.
Mind you, I had been through this house about 5 or 6 times over the past three days, so the layout was pretty familiar. Usually by the final few runs we're just taking in the scenic and admiring the craftsmanship, because the scares and unknown elements have been pretty well committed to memory.
I ended up in a completely solo run (the group in front of me bolted, and there was no one behind me), which I've done before, but there was just this building sense of dread the entire time. I rarely get anxiety, or at least I can separate out in my mind manufactured anxiety vs. authentic unease, and yet this was on a whole other level. I was genuinely happy to leave the house, and it really did feel like a weight had been lifted.