Ella loves chocolate croissants, abhors enchanted potions, and prefers her assassin's sneak suit to ball gowns.

Codenamed Cinderella, Ella has dedicated her life to serving the crown as an elite assassin, a choice that came with a steep cost. When she left court and her closest friends to train under her stepmother, Ella intended on never returning. But after her protege Sophie is killed the same night as an assassination attempt on Prince David, returning becomes her only chance to solve Sophie's murder. On assignment to protect the prince, Ella finds herself battling more than just relentless assassins, as emotions she had thought were long dead begin to rise. As Ella gets closer to Sophie's killer, she is forced to follow clues that make her question everything her stepmother has ever told her. Faced with an impossible choice, Ella has to decide if her oath is more important than her heart.