After the death of her husband, Claire Marrable is left with mounting debts and no means to maintain her affluent lifestyle. She moves to Arizona to live with her nephew George, who provides her with a secluded house. Claire devises a sinister plan to maintain her wealth by hiring elderly widows as housekeepers, stealing their savings, and then disposing of them when they outlive their usefulness. The cycle continues until her latest victim's sudden disappearance raises suspicions.

Alice Dimmock, a friend of the most recent missing housekeeper, becomes increasingly suspicious of Claire’s activities and devises a plan to investigate. Alice takes a position as Claire's new housekeeper to find proof of foul play, while maintaining her cover. As Alice delves deeper into Claire’s world, she uncovers disturbing evidence that hints at the real fate of the previous housekeepers. Danger looms as Claire becomes aware of Alice's true intentions, setting the stage for a confrontation that will reveal just how far Claire is willing to go to protect her dark secrets.