The Secret Warning (Hardy Boys, Book 17)
Franklin W. Dixon
The Secret Warning (Hardy Boys, Book 17)
Age Rating, Reading Level & Content Guide
by Franklin W. Dixon
The text is written at a 6th grade reading level, the subject matter is intended for teens (ages 13+), and the content is mild with minimal sensitive material.
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About This Book
What secrets lie beneath the waves near Whalebone Island? Frank and Joe Hardy dive into a tangled mystery involving a sunken freighter and a priceless golden Pharaoh’s head. But can they uncover the truth before danger strikes?
Quick Assessment
This Hardy Boys adventure follows Frank and Joe as they investigate a suspicious insurance claim tied to a sunken freighter carrying an ancient treasure. Suitable for middle-grade to young teen readers, the story offers suspense and mystery without graphic content, making it a solid choice for fans of detective fiction and adventure.
Why we rated The Secret Warning (Hardy Boys, Book 17) 11LE
The Secret Warning (Hardy Boys, Book 17) is written at a Level 6 reading level across 228 pages. Strong independent readers around grade 7.0 can typically handle this book on their own; with parent or teacher support, The Secret Warning (Hardy Boys, Book 17) works for readers up to grade 8.0.
We rate The Secret Warning (Hardy Boys, Book 17) as 11LE ("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, The Secret Warning (Hardy Boys, Book 17) explores mystery, adventure, and detective stories — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 13+ range — the maturity and attention span match the story's pacing.
- ✓ Kids drawn to stories about mystery, adventure, detective stories.
Maybe not for
- ! Readers looking for something heavier — this is a gentle, low-stakes story by design.
For Parents
Content Intensity
11LE — 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
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Details
Book Length
- ISBN
- 9781557092854
- Pages
- 228
- Publisher
- National Geographic Books
- Published
- December 1, 2006
- Type
- Fiction