In 2017, when the idea of designer babies,” embryos genetically modified by parents for desired traits, was infesting the public’s imagination, “Arkangel” turned it into the nightmare we can all expect. While three-year-old Sara (Aniya Hodge) is an embryo, her single mother, Marie Sambrell (Rosemarie DeWitt), still infringes on her free will by implanting a child monitoring system that allows Marie to track what Sara sees, feels, and experiences. As with most Black Mirror paradoxes, the futuristic premise seems to be a helpful evolution of our present-day tech. But it leads to a vicious ending when Sara grows into her autonomy while her mother still wants to choose who and what her daughter sees in a level of overparenting that would turn any child insane. —Keith Nelson