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Content snapshot
Flag an inaccuracy →What's in this book, at a glance — five things readers want to know before they start.
Violence
Barely any
Adventure peril; appropriate for middle grade readers
Language
None
Clean language
Sexual Content
None
No sexual content
Substance Use
None
No substance use
Emotional Intensity
Barely any
Themes of family loyalty and the weight of secret knowledge
What this book is about
The tenth and final book in the original 39 Clues series brings Amy and Dan Cahill to the climax of their global hunt for the Cahill family secret. Haddix wraps up the multi-author series with appropriate finality and scale. Satisfying for readers who've followed the series from the beginning.
Notes for sensitive readers
Reader-flagged moments and themes that may affect your experience.
Reader Verification
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