And this is not the first time Black Mirror has done that. There are a lot of shows out there that can create good tension, but Black Mirror is the only show that can evoke pure discomfort in me, probably due to its realism, amazingly convincing acting and because they're all stand-alone episodes. Knowing that the story that is unfolding right in front of your eyes has the conclusion waiting just a couple of minutes away is what makes it even more gripping, because it creates very little time for the viewer to speculate about how things might escalate.
About two thirds into the episode is when I hit the point where I uncontrollably started smiling like a madman. The execution of the absolutely horrifying situation and decision making that the two main characters had to experience was just perfect. I had to resort to grinning just to make sure I was still me and not them, I suppose.
Unfortunately, I got lost on the big reveal the first time around. Actually, I didn't think it was a reveal at all, but more of a misunderstanding. But with Black Mirror, there's always something enjoyable about not fully grasping the twist and the story's subtle hints right away. When you re-watch moments of episodes like this one, you'll notice a lot of details in dialogues and actions that really makes you feel dumb for not picking them up instantly.