Peggy Shippen is everything Becca is not -- a beautiful, rich, and horribly spoiled Quaker daughter whose life revolves around the whirlwind society of Philadelphia in 1778. Becca's family has fallen on hard times, and she is sent to the Shippen household to be Peggy's personal maid and to receive a finishing education. But working for Peggy, Becca gets an education in deceit and treachery, as Peggy sets her sights first on British Captain John Andre and then on American General Benedict Arnold.

As Becca fervently tries to find the "missing pieces" of her self, she watches in horror as Peggy Shippen manipulates General Benedict Arnold to turn traitor and join forces with the Crown against the revolutionary Americans.