In the movie Bad Nanny, a mother hires a nanny to take care of her young daughter while she works. The nanny, Rachel, seems perfect at first, but as time passes, the mother, Karen, starts to notice strange behavior from Rachel. Rachel becomes possessive and controlling, going beyond her job duties and infiltrating Karen's personal life.
Karen discovers that Rachel is not who she seems, and begins to fear for both her daughter's safety and her own. Rachel's true intentions are revealed - she is a psychopath who wants to replace Karen as the mother of the child. Karen must fight for her family's safety and break free from Rachel's dangerous grip.
The movie is a thriller that explores the dangers of putting your trust in the wrong person. It stars a cast that includes Matt Dallas as the father, Kristen Vaganos as the mother, and Rachel Hendrix as the nanny.