Undercover Kid
Ronald Kidd
Undercover Kid
Age Rating, Reading Level & Content Guide
Tuna Surprise
by Ronald Kidd
Illustrated by Sklar, Andy, illustrator
The text is written at a 2nd grade reading level, the subject matter is intended for younger children (ages 5–8), and the content is gentle with no concerning themes.
We may earn a commission from these links. Bookshop.org supports independent bookstores with every purchase.
About This Book
What if your grandpa showed up with a secret invention that could turn you into the best spy ever? Imagine sneaking around the neighborhood, trying to catch the sneaky thief stealing tuna fish from Mr. Kling’s shop. Can Maggie crack the case before the mystery fish vanish for good?
Themes
Quick Assessment
This early reader book follows eight-year-old Maggie Murphy as she uses her grandfather’s inventive gadget to solve a local mystery. Suitable for ages 5-8, it blends themes of family, curiosity, and problem-solving in a lighthearted story that encourages young readers’ engagement and critical thinking. There is no intense content, making it an appropriate and fun choice for early elementary children.
Why we rated Undercover Kid 7C
Undercover Kid is written at a Level 2 reading level across 47 pages. Strong independent readers around grade 3.0 can typically handle this book on their own; with parent or teacher support, Undercover Kid works for readers up to grade 4.0.
We rate Undercover Kid as 7C ("Clear") because the content sits in the "Gentle" range — no conflict beyond everyday childhood experiences. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly gentle; no single dimension stands out as a concern.
No specific content flags were raised by community reviewers, which is consistent with the gentle intensity score.
Thematically, Undercover Kid explores juvenile fiction, spies, families, inventions, and mystery — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 5-8 range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about juvenile fiction, spies, families.
Maybe not for
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
7C — ClearNo conflict beyond everyday childhood experiences. Safe for sensitive readers.
Was our "Gentle" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
1/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
Similar Books
Based on content and theme analysis
Junior Spy
Kiara Kattler
Junior Spy
Kiara Kattler
Undercover Kid
Ronald Kidd
Undercover Kid
Ronald Kidd
Mac undercover
Mac Barnett
Mac undercover
Mac Barnett
Big Boys Don't Spy
K. E. M. Johnston
Big Boys Don't Spy
K. E. M. Johnston
Sneaky Spies
Thomas Kingsley Troupe
Sneaky Spies
Thomas Kingsley Troupe
Meet the Spy kids
Kate Egan
Meet the Spy kids
Kate Egan
Details
Book Length
- ISBN
- 9780439024198
- Pages
- 47
- Publisher
- Scholastic
- Published
- 2007
- Type
- Fiction