Reviewed by HootRated editorial · Last updated
Day of the assassins
Johnny O'Brien
Day of the assassins
Age Rating, Reading Level & Content Guide
A Jack Christie Novel
by Johnny O'Brien
The text is written at a 6th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material. Its HootRating code, LE, means mild content, mostly emotional.
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About This Book
The sharp clang of a clock echoes through a shadowy room filled with the scent of old paper and cold metal. Suddenly, Jack finds himself hurtling through time to Europe in 1914, where danger and mystery swirl around every corner. Can he navigate a world on the brink of war and the secrets that might change history forever?
Themes
Quick Assessment
This middle-grade historical adventure follows fifteen-year-old Jack as he travels back to 1914 Europe using a time machine created by his estranged father. The story introduces young readers to key historical events leading to World War I while blending fiction with educational elements. Suitable for ages 9-12, the book contains mild peril and themes of family and bravery.
Why we rated Day of the assassins LE (Mild)
Day of the assassins is written at a Level 6 reading level across 211 pages. Reading-wise, most kids in grade 7 and up can manage Day of the assassins on their own; younger readers can enjoy it with a parent or teacher reading along.
We rate Day of the assassins as LE (Mild, mostly emotional) because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.
No specific content flags were raised by community reviewers, which is consistent with the mild intensity score.
Thematically, Day of the assassins explores adventure, historical, family, science & nature, and time travel — 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 adventure, historical, family.
- ✓ Readers (and parents) who care about award-recognized writing — Day of the assassins carries an award.
Maybe not for
- ! Readers looking for something heavier — this is a gentle, low-stakes story by design.
For Parents
Content Intensity
LE · Mild · EmotionalReading the HootRating code: the first letter is the content intensity (C = Gentle · L = Mild · M = Moderate · I = Intense · V = Very Intense); the second, when there is one, is the kind of content that drives it (E = Emotional · P = Physical · S = Social · T = Thematic). Reading level and age range are rated separately. How we rate
Light conflict or tension. Mild peril resolved quickly.
Was our "Mild" content intensity rating accurate for this book?
Reading Insights
Discussion Potential
3/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9780763645953
- Pages
- 211
- Publisher
- Candlewick Press
- Published
- 2009
- Type
- Fiction