Who Took Henry and Mr. Z?
Dave Glaze
Who Took Henry and Mr. Z?
Age Rating, Reading Level & Content Guide
by Dave Glaze
The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material.
We may earn a commission from these links. Bookshop.org supports independent bookstores with every purchase.
About This Book
What if your two favorite guinea pigs vanished without a trace, and along with them, some missing money? Imagine racing against time with a clever friend to uncover clues, dodge tricky suspects, and clear your name. Can you solve the mystery before it's too late?
Themes
Quick Assessment
This middle-grade mystery features two young detectives trying to find their missing guinea pigs and stolen cash while protecting their reputations. Suitable for children ages 9 to 12, the story includes themes of friendship, problem-solving, and adventure with light suspense but no intense content. It's an engaging read for young mystery enthusiasts.
Why we rated Who Took Henry and Mr. Z? 9LE
Who Took Henry and Mr. Z? is written at a Level 4-5 reading level across 136 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, Who Took Henry and Mr. Z? works for readers up to grade 6.5.
We rate Who Took Henry and Mr. Z? as 9LE ("Light — Emotional") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.
No specific content flags were raised by community reviewers, which is consistent with the mild intensity score.
Thematically, Who Took Henry and Mr. Z? explores adventure, mystery, friendship, and problem-solving — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
- ✓ Kids drawn to stories about adventure, mystery, friendship.
Maybe not for
- ! Readers looking for something heavier — this is a gentle, low-stakes story by design.
For Parents
Content Intensity
9LE — Light — EmotionalLight conflict or tension. Mild peril resolved quickly.
Was our "Mild" content intensity rating accurate for this book?
Reading Insights
Hook Factor
3/10A 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
Mr. and Mrs. Bunny-- detectives extraordinaire!
Polly Horvath
Mr. and Mrs. Bunny-- detectives extraordinaire!
Polly Horvath
Who Stole the Hamster?
N. Griffin
Who Stole the Hamster?
N. Griffin
The Rat with the Human Face
Tom Angleberger
The Rat with the Human Face
Tom Angleberger
The 3-2-3 Detective Agency in The disappearance of Dave Warthog
Fiona Robinson
The 3-2-3 Detective Agency in The disappearance of Dave Warthog
Fiona Robinson
PI Gus
Hank Kunneman
PI Gus
Hank Kunneman
Who done it?
Jon Scieszka
Who done it?
Jon Scieszka
Details
Book Length
- ISBN
- 9781550501070
- Pages
- 136
- Publisher
- Regina : Coteau Books
- Published
- November 1996
- Type
- Fiction