Case closed.
青山 剛昌 [Gōshō Aoyama]
Case closed.
Age Rating, Reading Level & Content Guide
by 青山 剛昌 [Gōshō Aoyama]
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
Shin'ichi races down a dark alley, heart pounding as footsteps close in behind him. Suddenly, a shadowy figure grabs him, and everything spins out of control—then he wakes up as a kid! Now, as Conan Edogawa, he must solve the mystery of who did this before it's too late.
Themes
Quick Assessment
This thrilling mystery follows a high school detective who is mysteriously transformed into a child while investigating gruesome crimes including murder and abduction. Suitable for ages 9-12, it contains intense themes of crime and violence but handles them with a focus on problem-solving and suspense. Parents should be aware of the darker subject matter involving serious crimes.
Why we rated Case closed. 9MP
Case closed. is written at a Level 4-5 reading level across 181 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, Case closed. works for readers up to grade 6.5.
We rate Case closed. as 9MP ("Moderate — Physical") because the content sits in the "Moderate" range — moderate conflict that may involve loss, scary scenes, or interpersonal stakes. The strongest signals come from physical peril, thematic difficulty — these are the dimensions parents should evaluate against their reader's tolerance.
Specific content flags noted by reviewers: Violence, Crime.
Thematically, Case closed. explores mystery, crime, coming of age, and adventure — 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 mystery, crime, coming of age.
Maybe not for
- ! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
- ! Children who are sensitive to violence, even when handled at age-appropriate levels.
For Parents
Content Intensity
9MP — Moderate — PhysicalReal 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
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
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Based on content and theme analysis
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Details
Book Length
- ISBN
- 9781591163275
- Pages
- 181
- Publisher
- VIZ Media LLC
- Published
- 2004
- Type
- Fiction