A Cauldron of Secrets — Thomas K. Carpenter

Ignorance is bliss, unless the world is out to kill you... An investigation into a strange cauldron and a dead thief in Ben Franklin's parlor leaves Katerina Dashkova, Russian princess in exile, as the main suspect. With her memory damaged and Ben Franklin missing, Kat must navigate the treacherous waters of American politics to solve the mystery while ominous rumblings threaten to drag the country into a new war.