The nationality of "Black Mirror" is a little complicated. Most of the first two seasons of the show were definitely British, which makes sense given that it was released on Channel 4 in the UK. The first bit of foreshadowing for its American turn came in the 2014 special "White Christmas," in which Jon Hamm (the man behind one of the most iconic American TV characters of the 2000s), co-led the episode. The episode still took place in a fictional version of the UK, however, and its dark ending feels much more in line what fans consider to be the British spirit of "Black Mirror."

After "White Christmas," the show was bought by the American streaming service Netflix, and its first episode back was a very American "Nosedive." From this point on, "Black Mirror" would seem to switch back and forth between American or British settings and protagonists. Fans immediately picked...