Since the death of her beloved mother, Lady Grace has become the Queen's favourite Maid of Honour. But even favourites have to obey the Queen's wishes - and the Queen wants Grace to be married. Choosing between her suitors - kindly old Sir Charles, flashy Sir Gerald and sweet, anxious Lord Robert - is easy for Grace: she doesn't want to marry any of them! When Gerald is found dead after the ball at which Grace should have picked her favourite suitor, suspicion falls on Lord Robert. But Grace has noticed that Sir Charles has been acting strangely - and that there is something odd about the body. With her friends Ellie the maid and Masou the acrobat, Lady Grace sets out to discover what really went on that night.