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City of bones

Michael Connelly

Cover of City of bones

City of bones

Age Rating, Reading Level & Content Guide

by Michael Connelly

Reading Level 8 12ME Ages 9-12 Balanced Read

The text is written at a 8th 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

Here's a secret: a dog discovers a mysterious bone buried deep in the Hollywood Hills, and it leads to a cold case no one has solved for over twenty years. Detective Harry Bosch digs into the past, but that’s only the beginning.

Themes

Quick Assessment

This middle-grade mystery follows Detective Harry Bosch as he investigates a decades-old murder case uncovered by a dog’s discovery. The story explores themes of crime, memory, and resilience, suitable for readers aged 9-12 who enjoy suspenseful but age-appropriate mysteries. Some scenes involve police investigations and mild peril but remain appropriate for the target audience.

Why we rated City of bones 12ME

City of bones is written at a Level 8 reading level across 438 pages. Strong independent readers around grade 9.0 can typically handle this book on their own; with parent or teacher support, City of bones works for readers up to grade 10.0.

We rate City of bones 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 — 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, City of bones explores mystery, police, crime, friendship, 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.
  • Patient readers who enjoy slower, character-driven stories.
  • Kids drawn to stories about mystery, police, crime.

Maybe not for

  • ! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
  • ! Reluctant readers who need a fast hook — the pacing here rewards patience.

For Parents

Content Intensity

12ME — Moderate — Emotional
Emotional
Moderate
Physical
Light
Social
Light
Thematic
Light

Real stakes and emotional weight. May include sustained danger, loss, or bullying.

Data confidence: standard

Was our "Moderate" content intensity rating accurate for this book?

Reading Insights

Hook Factor

2/10

A steady, thoughtful read that rewards patient readers.

Discussion Potential

3/10

A lighter read — great for independent enjoyment.

Book DNA

Multi-dimensional content fingerprint

Vocabulary Level
7
Emotional Weight
6
Theme Richness
5
World Scope
7
Data Confidence
7

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Details

Book Length

438 pages
ISBN
9780446611619
Pages
438
Publisher
Grand Central Publishing
Published
2003
Type
Fiction

Genres

Subjects

Harry BoschPoliceChildrenCrimes AgainstBoschHarryLos Angeles

Places

Los Angeles (Calif.)CaliforniaLos Angeles