2 books · Ages 5–10
The Secret Knowledge of Grown-Ups is a 2-book series for ages 5–10 by David Wisniewski. Each book stands alone — start anywhere.
Where to Start
Start anywhere — each book stands alone.
That said, The Secret Knowledge of Grown-Ups and The Second File are great first picks.
All Books
No particular order needed — browse and pick what catches your eye.
