The Housemaid (2025) film follows Millie Calloway, a young woman with a criminal record, who takes a live-in maid job for the wealthy but troubled Winchester family (Nina and Andrew), only to find her attic room locks from the outside and Nina's erratic behavior hides a dark secret, eventually revealing Nina isn't the villain but a victim trying to escape Andrew's psychological abuse, with Millie becoming her unexpected pawn in a dangerous game of manipulation, twists, and survival.