The door to December
Dean Koontz
The door to December
Age Rating, Reading Level & Content Guide
by Dean Koontz
The text is written at a 6th grade reading level, the subject matter is intended for teens (ages 13+), and the content is intense and may include graphic or distressing scenes.
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About This Book
When Laura McCaffrey receives a late-night call, she is thrust into a chilling mystery involving her husband's violent death and the fate of her missing daughter, Melanie, who vanished six years ago. As Laura uncovers the secrets hidden in her husband's secret laboratory, she confronts a terrifying reality that threatens to consume them both. This gripping thriller explores the depths of obsession and the desperate pursuit of truth.
Quick Assessment
This is a Level 6-7 book with intense content intensity. Content themes include physical danger, violence, fear & anxiety. Written for readers ages 13+.
Why we rated The door to December 11IE
The door to December is written at a Level 6-7 reading level (approximately 120,591 words). Strong independent readers around grade 7.4 can typically handle this book on their own; with parent or teacher support, The door to December works for readers up to grade 8.4.
Read aloud, The door to December runs about 13.4 hours — long enough to span several bedtime sessions.
We rate The door to December as 11IE ("Intense — Emotional") because the content sits in the "Intense" range — intense conflict including peril, frightening scenes, or emotionally heavy themes. 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, Violence, Fear & Anxiety.
Thematically, The door to December explores family, mystery, and psychological thriller — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 13+ range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about family, mystery, psychological thriller.
Maybe not for
- ! Sensitive readers who get overwhelmed by intense conflict or scary scenes.
- ! Children younger than 13+ — the content intensity is above what most younger kids can process comfortably.
- ! Children who are sensitive to violence, even when handled at age-appropriate levels.
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
11IE — Intense — EmotionalHeavy themes explored in depth. War, death, abuse addressed directly.
Content Flags
Was our "Intense" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
2/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 0451205421
- Publisher
- National Geographic Books
- Published
- 2002-06
- Type
- Fiction
- Word Count
- 120,591
- Read-Aloud
- ~13h 24m