This story takes place amidst a scandal within the French court, where a noble woman, seventeen-year-old Jacqueline “Jac” d’Argenson-Aunis, finds herself in the dangerous and watchful gaze of French royalty when she falls in love with the handsome king who is engaged to her former beloved.

Jac is the servant of honor for her best friend and former love, Princess Marguerite “Margot” de Valois, but she dreams of more. If she handles things carefully, one day she will become a full member of Societas Solis, a secret society of spies, like her uncle and guardian, Orator Gabriel d’Argenson-Aunis.

But it’s difficult for her to think about her own ambitions while France is on the brink of war, and the country’s only salvation seems to be an alliance—a marriage between the Catholic Princess Margot and Henry, the despicable son of the Queen of the Huguenots. Who could be the perfect intermediary? Of course, Jac.

Jac hates lying to her best friend almost as much as she hates the bold and arrogant King Henry, but it’s her only chance to prove to Societas Solis that she belongs among them before her uncle marries her off or worse. The more time Jac spends in the secret corners of the French court, the more she begins to wonder if Henry isn’t... as terrible as she once thought. And Societas Solis might not be what it seems.

With politics, spies, and chaos in the French court, even magic? Everything becomes more dangerous when love is involved.