In 1740s Valdoria, Celeste Ashford grows up with revenge in her heart after her mother is murdered by Eleanor Blackwood. Raised and sharpened by Lady Marguerite Valois, the king’s mistress, she enters the royal court a decade later to confront the woman who has become queen. As Celeste gains the king’s attention, danger closes in through poison, blame, and a fake pregnancy scandal. Even as doubt and betrayal test them, her connection to Marguerite remains unbroken—right up to her mentor’s final sacrifice.