Detective Books for Kids · 548 titles considered

The Best Detective Books for Kids

By the Bookroo Editors
Updated July 29, 2026

A good children’s detective story makes a solemn promise: the answer is hiding somewhere on the page. It may be tucked into a painting, buried in an old letter, carried off by a pigeon, or sitting in plain sight while a very small private eye struggles into his pants. The grown-ups can call it baffling. The reader has evidence.

Drawing from Bookroo’s collection of 548 detective books, our editors chose thirteen that let children do more than watch a mystery get solved: they can sniff the trail with Detective Dog Nell, test an alibi beside Encyclopedia Brown, follow Nancy Drew and the Hardy Boys into their first cases, and untangle prizewinning puzzles with real history underneath them. Start with the fixed shortlist, then browse picture books for read-aloud sleuthing and chapter books for readers ready to keep their own case notes.

The Shortlist

Our 13 Favorite Detective Books for Kids

The Detective Dog
Sale price
$1899
Picture Book · Ages 3–6 · 2016

The Detective Dog

By Julia Donaldson, Sara Ogilvie (Illustrator)

Every book has vanished from Peter’s school. Fortunately, Detective Dog Nell can follow a story by scent.

32 pages· 794 words· Est. 7 min read-aloud
Best for
A first full detective story at read-aloud age
5.7/7 Bookroo·4.3/5 Goodreads · 1,789 ratings
$19.99Save 5%
Hardcover
Baby Monkey, Private Eye
Sale price
$1597
Picture Book · Ages 4–8 · 2018

Baby Monkey, Private Eye

By Brian Selznick (Author/Illustrator), Mr. David Serlin

Baby Monkey finds missing jewels, keys, a pizza, and a spaceship; putting on his pants is the case that nearly defeats him.

192 pages· 342 words· Est. 3 min read-aloud
Best for
Pre-readers who want to “read” a case themselves
4.0 Goodreads · 3,886 ratings
$16.99Save 6%
Hardcover
How Kate Warne Saved President Lincoln
Sale price
$1597
Picture Book · Ages 4–8 · 2016

How Kate Warne Saved President Lincoln

In 1856, Kate Warne asks Allan Pinkerton for a detective job — then helps uncover a plot against Abraham Lincoln.

32 pages· 1,217 words· Est. 10 min read-aloud
Best for
The real history behind the first woman detective
3.9 Goodreads · 188 ratings
$16.99Save 6%
Hardcover
Basil of Baker Street
Sale price
$759
Chapter Book · Ages 6–9 · 1958

Basil of Baker Street

By Eve Titus, Paul Galdone (Illustrator) · Book #1 in the The Great Mouse Detective series

Twin mice disappear, a ransom note arrives, and the finest detective beneath Baker Street takes the case.

112 pages· 10,010 words· Est. 2 hour read
Best for
A gentle first chapter-book homage to Sherlock Holmes
5.3/7 Bookroo·3.9/5 Goodreads · 2,887 ratings
$7.99Save 5%
Paperback
Nate the Great
Sale price
$674
Chapter Book · Ages 6–9 · 1972

Nate the Great

By Marjorie Weinman Sharmat, Marc Simont (Illustrator) · Book #1 in the Nate the Great series

Annie’s picture of her dog Fang is missing, and Nate intends to find it before his stack of pancakes gets cold.

64 pages· 1,619 words· Est. 18 min read
Best for
The newly independent reader’s first fair-play case
4.0 Goodreads · 14,737 ratings
$6.99Save 4%
Paperback
Encyclopedia Brown, Boy Detective
Sale price
$674
Chapter Book · Ages 7–10 · 1963

Encyclopedia Brown, Boy Detective

Idaville’s ten-year-old detective hears each case over dinner or at his garage office — and leaves the last deduction to the reader.

96 pages· 9,068 words· Est. 1.5 hour read
Best for
Kids who want to solve every case before turning the page
4.0 Goodreads · 40,449 ratings
$6.99Save 4%
Paperback
The Secret of the Old Clock
Sale price
$1049
Chapter Book · Ages 7–12 · 1930

The Secret of the Old Clock

A missing will, an old clock, and a family about to lose its inheritance give Nancy Drew her first case.

192 pages· 34,724 words· Est. 5 hour read
Best for
The classic girl-detective series starter
4.0 Goodreads · 86,668 ratings
$10.99Save 5%
Hardcover
The Tower Treasure
Sale price
$1049
Chapter Book · Ages 8–12 · 1927

The Tower Treasure

Frank and Joe Hardy investigate a mansion robbery after their detective father’s chief suspect disappears.

180 pages· 35,310 words· Est. 5 hour read
Best for
Readers who want danger, teamwork, and a long series ahead
5.5/7 Bookroo·3.9/5 Goodreads · 20,840 ratings
$10.99Save 5%
Hardcover
InvestiGators
Graphic Nov.
Sale price
$1248
Chapter Book · Ages 7–10 · 2020

InvestiGators

Mango and Brash are sewer-traveling alligator agents with V.E.S.T.s, gadgets, and two criminals to catch.

208 pages· 8,763 words· Est. 1.5 hour read
Best for
Graphic-novel readers who prefer puns with their clues
4.3 Goodreads · 4,317 ratings
$12.99Save 4%
Hardcover
Pigeon P.I.
Graphic Nov.
Sale price
$1597
Picture Book · Ages 4–7 · 2017

Pigeon P.I.

A retired pigeon private eye returns to the rooftops when a little canary reports a birdnapping.

40 pages· 552 words· Est. 6 min read-aloud
Best for
A stylish picture-book introduction to detective noir
4.5/7 Bookroo·3.8/5 Goodreads · 351 ratings
$16.99Save 6%
Hardcover
Chasing Vermeer
Sale price
$858
Chapter Book · Ages 9–12 · 2004

Chasing Vermeer

A Vermeer disappears en route to an exhibition, and two Chicago sixth graders find patterns the FBI has missed.

273 pages· 43,472 words· Est. 5 hour read
Best for
Art lovers who enjoy codes and uncanny coincidences
3.7 Goodreads · 31,629 ratings
$8.99Save 5%
Paperback
The Parker Inheritance
Sale price
$858
Chapter Book · Ages 8–12 · 2018

The Parker Inheritance

A letter in Candice’s grandmother’s attic promises a fortune to anyone who can expose a South Carolina town’s buried injustice.

368 pages· 84,464 words· Est. 11.5 hour read
Best for
A mystery where history is part of the evidence
4.2 Goodreads · 9,386 ratings
Paperback
The Westing Game
Sale price
$958
Chapter Book · Ages 11–15 · 1978

The Westing Game

Sixteen heirs, eight pairs of clues, one dead millionaire, and a will insisting that one of them took his life.

182 pages· 50,662 words· Est. 4.5 hour read
Best for
Readers ready for the great ensemble puzzle novel
5.3/7 Bookroo·4.0/5 Goodreads · 241,565 ratings
$9.99Save 4%
Paperback
Browse by age

Detective Board Books for Toddlers

Lift-the-flap searches, missing toys, mysterious creatures, and a first tiny taste of Sherlock Holmes — sturdy cases for ages 0–5.

Sloth Slept on
Sale price
$795

Sloth Slept on

Ages 3–5 · 2014

Kids find a mysterious creature napping in their tree. What is it, and where does it belong?

Browse by age

Detective Picture Books & First Mysteries

Missing books, stolen snacks, animal investigators, and clues a read-aloud crowd can spot before the detective does — ages 3–8.

A House That Once Was
Sale price
$1899

A House That Once Was

Ages 3–6 · 2018

Two children explore an abandoned house, uncovering its mysterious past.

The Eye That Never Sleeps
Sale price
$1799

The Eye That Never Sleeps

Ages 6–9 · 2018

A detective thwarts a plot to assassinate Lincoln en route to his inauguration.

Sale price
$1699

A Case in Any Case

Ages 5–11 · 2016

Alone at the station, Buffy hears eerie noises. Can she solve the mystery?

Sale price
$1599

Agatha Christie

Ages 4–7 · 2016

Uncover the mystery behind Agatha Christie's rise to the queen of crime writing.

Sale price
$899

Binny Bewitched

Ages 8–12 · 2016

A lost ATM cash leads to chaos and mystery in Binny's life.

Browse by age

Detective Chapter Books & Middle Grade Mysteries

Fair-play cases, neighborhood sleuths, art thefts, secret codes, and classic series starters for independent readers ages 6–13.

Sale price
$699

Ada Lace, on the Case

Ages 6–10

A young girl investigates the disappearance of a neighbor's dog in her new neighborhood

Sale price
$2499

A Study in Scarlet

Ages 12–18 · 1887

A penniless doctor and a brilliant detective unravel a dark murder mystery in Victorian London.

Sale price
$799

The Great Cake Mystery

Ages 7–10 · 2010

A young girl in Botswana solves a mystery at her school with the help of her friends and her own detective skills

The Thief Lord
Sale price
$999

The Thief Lord

Ages 8–12 · 2000

Two brothers flee to Venice, pursued by a detective, uncovering a magical treasure that alters time.

Super Detectives!
#1 in Series
Graphic Nov.
Sale price
$1299

Super Detectives!

Ages 6–9 · 2021

Two friends start a detective agency and take on their first case, a mysterious pug named Roy.

Sale price
$1799

All Ears

Ages 8–12 · 2025

A missing elephant and a vandalism charge—can Teddy solve both mysteries before it's too late?