"Christine Papin, an overworked live-in maid, is reunited with her younger sister, Lea, who has also been hired by the wealthy Lancelin family. They make the estate's beds, scrub the floors, and spy on the domestic strife that routinely occurs within its walls. What starts as petty theft by the maids -- who are flashing back to their tumultuous time in a convent -- shortly turns into something more nefarious. Madame Lancelin's increasingly unhinged...