Eugenie de Boncoeur has fled the violence of the French Revolution to find sanctuary in England at the home of her cousin, Hetta. At first, the two girls find themselves at loggerheads: Hetta can't understand Eugenie's preoccupation with clothes and appearance, and scorns her politics. Soon, however, they are drawn together by a shared sense of danger, for across the Channel waits the vengeful Pale Assassin, determined to claim Eugenie for himself. With her brother's life at stake, how can she refuse his dreadful bargain? But it will mean sacrificing her chance of love and returning to Paris in the grip of the Terror. Eugenie must now decide her destiny - with or without Hetta's help.