The Conjurer's Riddle (The Inventor's Secret, 2)

Charlotte leads her group of exiles west, plunging into a wild world of shady merchants and surly rivermen on the way to New Orleans. But as Charlotte learns more about the revolution she has championed, she wonders if she's on the right side after all. Charlotte and her friends get to know the mystical New Orleans bayou, and deep into the shadowy tunnels below the city - the den of criminals, assassins and pirates - Charlotte must decide if the revolution's goals justify their means, or if some things, like the lives of her friends, are too sacred to sacrifice.