MysteryAges 1418
By Maureen Johnson

Truly Devious

Safe for the age band

Age-appropriate with no significant concerns.

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Published
2018
Ages
14–18

About the book

About the book

A true-crime aficionado tries to solve a cold case at her Vermont boarding school, but a modern-day mystery unfolds around her.

AI summary

A true-crime aficionado tries to solve a cold case at her Vermont boarding school, but a modern-day mystery unfolds around her.

Why parents choose this book

What makes Truly Devious worth choosing

An honest, parent-first look at who this book suits, what it offers, and what to know before you buy.

Best for

  • Age range: 14–18 (fits siblings across a range).
  • Reading maturity: Young adultteen protagonists and more nuanced themes.
  • Kids who tend to love it: Mystery.
  • Personality fit: puzzle-solvers who like to figure things out.

Parents love this book because

  • Age-appropriate content for the 14–18 band with no significant flags.
  • Written by Maureen Johnson, whose books parents return to for consistently thoughtful storytelling.

Your child will probably enjoy Truly Devious if they…

  • Enjoy solving mysteries

This book helps develop

Vocabulary, sustained attention, and reading confidence for the 14–18 age band.

Things parents should know

  • Violence: cartoonish or off-page action.
  • Language: clean language throughout.
  • Sexual content: essentially none.

Reading commitment

Estimated reading time
Varies by reader
Length
Length varies by edition
Difficulty
Young adult
Works as read-aloud
Usually read independently
Good for independent readers
Yes — suits confident readers in the age band

Similar books your child may love

Why we recommend it

We think Truly Devious is a confident pick for the 14–18 age band. It leans into mystery in a way that feels genuine, not formulaic. Maureen Johnson's voice is what makes it stick: readable, respectful of kids, and easy to hand to the next child in the family.

Content ratings

Violence1/4
Romance0/4
Language1/4
Scary content0/4
Faith content0/4
Sexual content1/4

Genres

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