"In the wake of her parents' mysterious disappearance, a society girl discovers her dilettante father and flighty mother were leading double lives as government spies. With the help of her uncle and mentor, she determines to continue her parents' work-a decision that takes her from the ballrooms of London to the fox hunts and regattas and soirees of high society, chasing down artfully hidden clues while trying to keep her mission a secret from her best friend, her suitors, and the nosy (and handsome) police detective who is hot on her heels"-- Provided by publisher.