She was there a minute ago. You turned your back for just one second, and now she’s gone. Your child is missing. Rosemarie DeWitt plays a single mother who faces this parental terror in Black Mirror season four’s Jodie Foster-helmed episode, “Arkangel.” But once her daughter reappears, this mother’s determination to never let her out of her sight again leads to trusting some curious new tech.

They promise it’s completely safe.

Black Mirror’s fourth season will hit Netflix in 2018.

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Kristy Puchko is the managing editor of Pajiba. You can follow her on Twitter.