The Habitat (1970)

When the young Filipino au pair Ruby disappears from one of Denmark's most affluent neighborhoods north of Copenhagen, the neighbor, Cecilie, becomes convinced that something has happened to her. Cecilie's own au pair, Angel, begins to investigate the rumors circulating among the area's many au pairs, while suspicions of a crime grow. However, the case of the missing foreigner is a low priority for the police, and the newly minted investigator Alicia needs all the assistance she can get.