“Beyond the Sea” is the rarest breed of Black Mirror episode: the kind driven by empathy. Carried by a cast that includes Aaron Paul, Josh Hartnett, and Kate Mara, it’s equal parts character study and Twilight Zone creeping horror — a story focused less on the series’ typical social commentary than on three people whose impossible situation leads to an inevitably tragic end.
The episode is set in an alternate 1969 where two astronauts are midway through a six-year mission. Although their bodies are stuck in a cramped spacecraft, they spend most of their time inhabiting a pair of lifelike telepresence “replicas” on Earth. David (Hartnett) maintains an idyllic life with his wife and two children, taking his Neil Armstrong-esque celebrity...
