Leave Well Enough Alone — Rosemary Wells

Working as a mother's helper to a wealthy family that's surrounded by lavish houses and beautiful swimming pools is about as far from her working-class neighborhood in New York as Dorothy can get. But something is not quite right in the Hoades' house. They are hiding something-or someone-in the cottage behind the house. And when curiosity gets the better of her, Dorothy stumbles upon their secret-a secret that could cost her her future.