Deadly design
Debra Dockter
Deadly design
Age Rating, Reading Level & Content Guide
by Debra Dockter
The text is written at a 7th 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.
We may earn a commission from these links. Bookshop.org supports independent bookstores with every purchase.
About This Book
The sharp scent of antiseptic fills the air as Kyle races through cold, empty hallways, heart pounding like a drum. His brother Connor's sudden death feels like a shadow creeping closer, threatening to snuff out Kyle's own life. Every heartbeat counts now—can Kyle uncover the deadly secret before time runs out?
Quick Assessment
This science fiction thriller follows genetically engineered twins confronting a deadly mystery tied to their origins in a secret lab. Targeted at middle-grade readers (ages 9-12), the story explores themes of identity, survival, and family bonds, with some intense moments involving death and suspense. Parents should note the presence of genetic experimentation and the emotional impact of losing a sibling.
Why we rated Deadly design 12ME
Deadly design is written at a Level 7 reading level across 359 pages. Strong independent readers around grade 8.0 can typically handle this book on their own; with parent or teacher support, Deadly design works for readers up to grade 9.0.
We rate Deadly design as 12ME ("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, 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, Deadly design explores science & nature, adventure, mystery, family, and friendship — 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 science & nature, adventure, 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
12ME — 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
3/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
Similar Books
Based on content and theme analysis
Deadly
Sara Shepard
Deadly
Sara Shepard
Deadly summer
Kate William
Deadly summer
Kate William
Deadly secrets
M.C. Sumner
Deadly secrets
M.C. Sumner
Deadly!
Morris Gleitzman
Deadly!
Morris Gleitzman
Deadly Sister
Eliot Schrefer
Deadly Sister
Eliot Schrefer
Deadly!
Nicola Davies
Deadly!
Nicola Davies
Details
Book Length
- ISBN
- 9780399171055
- Pages
- 359
- Publisher
- Penguin Group (USA)
- Published
- 2015
- Type
- Fiction