The Inventor's Secret
Chad Morris
The Inventor's Secret
Age Rating, Reading Level & Content Guide
by Chad Morris
Cragbridge Hall
The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content has moderate intensity with some emotionally heavy themes.
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About This Book
Twins Abby and Derick begin a thrilling adventure as they enter the academy their grandfather built, discovering the perils of time travel. When their parents get trapped aboard the Titanic on the night it sinks, the siblings must use their wits and courage to rescue them before it's too late. This exciting journey blends mystery, family bonds, and a touch of fantasy.
Quick Assessment
This is a Level 4-5 book with moderate content intensity. Content themes include physical danger, fear & anxiety. Written for readers ages 9-12.
Why we rated The Inventor's Secret 9ME
The Inventor's Secret is written at a Level 4-5 reading level across 344 pages (approximately 76,861 words). Strong independent readers around grade 5.9 can typically handle this book on their own; with parent or teacher support, The Inventor's Secret works for readers up to grade 6.9.
Read aloud, The Inventor's Secret runs about 8.5 hours — long enough to span several bedtime sessions.
We rate The Inventor's Secret as 9ME ("Moderate — Emotional") because the content sits in the "Moderate" range — moderate conflict that may involve loss, scary scenes, or interpersonal stakes. The strongest signals come from emotional weight, physical peril — these are the dimensions parents should evaluate against their reader's tolerance.
Specific content flags noted by reviewers: Physical Danger, Fear & Anxiety.
Thematically, The Inventor's Secret explores family, adventure, fantasy world-building, friendship, and coming of age — 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.
- ✓ Readers who like a steady plot with enough momentum to keep pages turning.
- ✓ Readers ready to talk through themes after they finish — there's enough substance for a meaningful conversation.
- ✓ Kids drawn to stories about family, adventure, fantasy world-building.
Maybe not for
- ! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
For Parents
Content Intensity
9ME — Moderate — EmotionalReal stakes and emotional weight. May include sustained danger, loss, or bullying.
Content Flags
Was our "Moderate" content intensity rating accurate for this book?
Reading Insights
Hook Factor
5/10Engaging read with solid pacing and interesting themes.
Discussion Potential
4/10Good conversation starter with themes worth exploring together.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9781609073268
- Pages
- 344
- Publisher
- Cragbridge Hall
- Published
- 2013
- Type
- Fiction
- Word Count
- 76,861
- Read-Aloud
- ~8h 32m
- Text Density
- Standard