Now that Maddie has been kidnapped, Rosie, Louisa, and the boys are paying more attention to Evelyn's theories. As the group make their way toward war-torn Chicago, they're under constant threat of capture. Danger and dark surprises lurk around every twist of the road. Evelyn knows they need a strategy to find Maddie. But what the group comes up with may be their riskiest plan yet: infiltrating the Alliance itself.