In post-World War II England, a clever, young woman named Mary Adams finds herself thrust into a world of privilege and secrets as she transitions from being a wartime factory worker to a maid in the grand estates. As Mary begins a new position in the kitchens of a prestigious family, she finds herself in the midst of an engagement party where the air is thick with tension and secrets. When a poison-induced murder disrupts the facade of a forced union, Mary must uncover the identity of the killer before the killer destroys more than just the engagement....