Wow...
I caught the tail end of the story where the girl saw her "true self" in the mirror and, I gotta say, for a TV show, that was a very (good) creepy/ugly/disturbing makeup job they did. More the kind of thing I'd expect to see in a horror movie than on a network show.
It made me think of what the people looked like in The Shadow Over Innsmouth.
"Your entire life has been a mathematical error. A mathematical error I'm about to correct."