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A New York Times bestselling seriesA USA TODAY bestselling seriesA California Young Reader Medalwinning seriesSophie battles the rebelsand recovers dark memories from her pastin this jawdropping fourth book in the bestselling Keeper of the Lost Cities series.Sophie Foster is on the runbut at least she?s 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 they?d 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 havewith new allies joining thembut every choice has consequences. And trusting the wrong person could prove deadly.In this gamechanging fourth book in the Keeper of the Lost Cities series, Sophie must question everything to find a truth that will either save her worldor shatter it.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
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