Black Mirror didn’t do that one, but American Horror Stories did:
https://screenrant.com/american-horror-stories-season-3-episode-2-daphne-ending-explained/
Which is surprising because that show normally kinda sucks. Got roped into watching it last year, and I forgot I was watching AHS halfway through and almost thought it was a new Black Mirror.
Literally, absolutely nothing. For the first time in weeks. Just enjoying the evening.