Philadelphia, June 1780. George Washington's two least likely spies return, masquerading as husband and wife as they search for traitors in Philadelphia.

Months have passed since young widow Becca Parcell and former printer Daniel Alloway foiled a plot that threatened the new nation. But independence is still a distant dream, and General Washington can't afford more unrest, not with food prices rising daily and the value of money falling just as fast.

At the General's request, Becca and Daniel travel to Philadelphia to track down traitors who are flooding the city with counterfeit money. Searching for clues, Becca befriends the wealthiest women in town, the members of the Ladies Association of Philadelphia, while Daniel seeks information from the city's printers.

But their straightforward mission quickly grows personal and deadly as a half-remembered woman from Becca's childhood is arrested for murdering one of the suspected counterfeiters.

With time running out-and their faux marriage breaking apart-Becca and Daniel find themselves searching for a hate-driven villain who's ready to kill again.