Also try Severance, it's like Black mirror episode adapted to full length Tv show. If I were to place Severance in my ranking of black mirror episodes it would be no. 1. Even thinking about Severance makes me extremely sad and depressed, the story is very gripping, the thrill and suspense will be with you until the very last moment of the show and even after that the melancholy will be stuck with you as you wait for it's next season.