Death of a character3/5
Why this rating?
Several deaths and killings shape the plot, including past violence and present criminal danger; grief is less central than solving the case.
book
The Sign of Four
Is The Sign of Four appropriate for your child? See the reviewed age guidance, content cautions, positive themes, and supporting evidence below.
Explore the age guidance, content cautions, positive qualities, and supporting notes for The Sign of Four by Arthur Conan Doyle. This book is recommended for ages 13+; content notes include Alcohol or drugs, Death of a character, Frightening scenes; positive qualities include Creativity & curiosity, Courage & resilience.
Ages 13+Book 2 · Sherlock HolmesSource checked
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10-second decision
Is this likely to fit your family?
Age guidanceAges 13+
Strongest cautionsAlcohol or drugs 3/5 · Death of a character 3/5 · Frightening scenes 3/5
Strongest positivesCreativity & curiosity 4/5 · Courage & resilience 3/5
Series positionBook 2 · Sherlock Holmes
Recommendation3.3/5
Creativity & curiosity; strongest caution: alcohol or drugs.
This is the quick scan. Open the evidence and methodology below for the basis behind each rating.
Quick context
What parents should know
Murder, threats, frightening pursuit, colonial violence, and Holmes’s drug use combine with somewhat complex Victorian prose. The violence is usually restrained rather than graphic. This is guidance, not a safety guarantee; reading level and family context may differ. Creativity & curiosity; strongest caution: alcohol or drugs.
Readiness snapshotAge guidance: 13+Main watch-out: Alcohol or drugs 3/5
Recommendation 3.3/5Show Wikipedia summary
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Quick view
At a glance
Recommended age13+
Strongest cautions
- Alcohol or drugs3/5
- Death of a character3/5
- Frightening scenes3/5
Strongest positives
- Creativity & curiosity4/5
- Courage & resilience3/5
- Good role models3/5
Reading order
Series progression
All known volumes are shown. Reviewed books include age guidance and cautions; books still being reviewed are clearly marked.
- Book 1 · A Study in ScarletAges 14+Starting point
- Book 2 · The Sign of FourAges 13+Gets gentler
- Gets gentler
- About the same
- About the same
- Gets more intense
- Gets gentler
- Book 7 · The Valley of FearAges 14+Gets more intense
- Gets gentler
- About the same
Similar, with lighter cautions
Want something gentler?
These reviewed titles have overlapping age guidance and a lower total caution score than The Sign of Four. Open each review for the details.
What’s in it?
What’s good in it?
Family discussion
Talk about it
Conversation starters based on this title’s published content notes.
- What was the most imaginative idea in the story, and what would you add to it?
- How were alcohol or drugs portrayed, and what consequences did the story show?
- Which choice in The Sign of Four would you have made differently, and why?
- Who changed the most in The Sign of Four, and what caused that change?
Community perspective — separate from editorial ratings
What families noticed
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These content notes are a starting point, not a guarantee. Review the evidence and use your own judgment before choosing a title.
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