A New York Times bestselling series
A USA TODAY bestselling series
A California Young Reader Medalāwinning series
Sophie battles the rebelsāand recovers dark memories from her pastāin this jaw-dropping fourth book in the bestselling Keeper of the Lost Cities series.
Sophie Foster is on the runābut at least sheās not alone.
Her closest friends from the Lost Cities have gone with her to join the Black Swan. They still have doubts about the shadowy organization, but the only way to find answers is to start working with them. And as they settle into their new lives, they uncover secrets bigger than anything theyād imagined.
But their enemies are far from done, and unleash a terrifying plague that threatens the safety of an entire species. Sophie and her friends fight with everything they haveāwith new allies joining themābut every choice has consequences. And trusting the wrong person could prove deadly.
In this game-changing fourth book in the Keeper of the Lost Cities series, Sophie must question everything to find a truth that will either save her worldāor shatter it.