La perra

A wealthy couple hires Camelia as their maid; she's a country girl, quiet and deferential. They assume from the first day that she is a thief: they discuss her, complain about her, and set traps to prove her dishonesty. She works in silence. Meanwhile, these discussions, complaints, traps, and the sounds of her housework are aphrodisiacs for the couple. Is Camelia planning something; are the couple's instincts right?