The demon device
Robert Saffron
The demon device
Age Rating, Reading Level & Content Guide
a novel
by Robert Saffron
The text is written at a 6th 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
Arthur Conan Doyle races through the skies in his airplane, heart pounding as enemy fire streaks past. Behind enemy lines, danger waits at every turn, and Doyle must rely on his wits—and a mysterious woman named I.A.—to uncover a deadly secret. But when the mission takes an unexpected twist, will he survive the peril ahead?
Themes
Quick Assessment
Set during World War I, this middle-grade novel follows Arthur Conan Doyle as he undertakes a secret mission to stop a dangerous new weapon. The story blends historical fiction with adventure and mystery, featuring action scenes and complex character interactions. Suitable for ages 9-12, it includes themes of war, courage, and moral challenges, with some perilous situations and mature undertones.
Why we rated The demon device 11ME
The demon device is written at a Level 6 reading level across 287 pages. Strong independent readers around grade 7.0 can typically handle this book on their own; with parent or teacher support, The demon device works for readers up to grade 8.0.
We rate The demon device as 11ME ("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, thematic difficulty — these are the dimensions parents should evaluate against their reader's tolerance.
No specific content flags were raised by community reviewers, which is consistent with the moderate intensity score.
Thematically, The demon device explores adventure, historical, mystery, war & conflict, and family — 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 ready to talk through themes after they finish — there's enough substance for a meaningful conversation.
- ✓ Kids drawn to stories about adventure, historical, mystery.
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
11ME — Moderate — EmotionalReal stakes and emotional weight. May include sustained danger, loss, or bullying.
Was our "Moderate" content intensity rating accurate for this book?
Reading Insights
Hook Factor
3/10A steady, thoughtful read that rewards patient readers.
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
- 0399122850
- Pages
- 287
- Publisher
- Ace Books
- Published
- 1979
- Type
- Fiction