That really sent shivers down my spine. After the episode finished I just sat there feeling really weird for ages like when you have a weird dream and you can't function all the next day.
That's really well-put, and also drives home the idea of psychological terror being the worst of all. I mean, such disturbing imagery we can have in our dreams is entirely a product of our own minds, yet...exists outside of our conscious selves. Makes you wonder what else chews away at us, all the while we're not even aware of it!