Sometimes you get lucky, and the Mysterious Waif you adopted becomes a well-adjusted and welcome addition to the family. Other times. . .not so much. Of course, the young couple has no idea anything is wrong, but tropers will know right away there's something not right with this newcomer. She's a Creepy Child, who looks like she strolled straight out of the Uncanny Valley. It's not long before things start going wrong around her. Pets start acting up. Things go missing. There are fires. Injuries. Nocturnal birds of prey show up everywhere. The polar opposite of the Heartwarming Orphan.