This was amazing !! watching this episode makes me wonder how did they make that they can't be humans . black mirror became not only a series you watch but an idea stuck in your mind for the next 2 or 3 days after you watch an episode .
and this one was the best it was full of any thing you would like to see in a show
perfect acting , getting emotional for the characters , plot twists , showing many different ideas and mixing them up amazingly in one hour show
thank you black mirror.