Books About Detective Agencies

The Best Detective Agencies Books for Kids

By the Bookroo Editors

Looking for excellent children's books about detective agencies? This collection brings together Bookroo's highest-rated and most useful picks in one place.

Start with our editorial favorites, then browse recommendations organized by reading stage to find the right book for your reader.

The Shortlist

Our 6 Favorite Books About Detective Agencies

The Ghost in the Attic
Sale price
$674
Chapter Book · Ages 6–8 · 2014

The Ghost in the Attic

By Dori Hillestad Butler, Aurore Damant (Illustrator) · Book #2 in the The Haunted Library series

A young ghost boy and his friend, a human girl, start a detective agency to solve mysteries and find the boy's lost family.

128 pages· 11,777 words· Est. 2 hour read
4.2 Goodreads · 544 ratings
$6.99Save 4%
Paperback
Summary: Young detectives Kaz and Claire tackle their first case: a haunted attic in a neighbor's home. With Grannie's guidance, they uncover a mystery that isn't what it seems. Can they solve it before fear takes over? Discover the unexpected truth behind the spooky happenings.
Howard Wallace, P.I.
Sale price
$1398
Chapter Book · Ages 9–13 · 2016

Howard Wallace, P.I.

By Casey Lyall · Book #1 in the Howard Wallace, P. I. series

A young detective tackles blackmail with an unexpected partner.

272 pages· 49,851 words· Est. 5.5 hour read
4.3 Goodreads · 529 ratings
$14.95Save 6%
Hardcover
Summary: Twelve-year-old Howard Wallace, a self-styled detective, operates from a makeshift office behind the school shed. When a blackmail case lands on his desk, he reluctantly teams up with new kid Ivy Mason. As they navigate stakeouts and suspects, Howard discovers that having a partner—and maybe a friend—might not be so bad. Can this unlikely duo crack the case and redefine what it means to work together?
The Sherlock Society
Sale price
$1899
Chapter Book · Ages 8–12 · 2024

The Sherlock Society

By James Ponti · Book #1 in the The Sherlock Society series

Kids uncover a hidden treasure and corporate conspiracy in Miami.

339 pages· 58,645 words· Est. 8 hour read
4.2 Goodreads · 4,885 ratings
Hardcover
Summary: Siblings Alex and Zoe Sherlock, with friends Lina and Yadi, dive into a summer of mystery in Miami. Armed with their grandfather's cold cases and a classic Cadillac, they chase a legendary treasure linked to Al Capone. Their quest leads them to a remote Everglades island, where they stumble upon a dangerous corporate conspiracy. Can the Sherlock Society unravel the truth before it's too late?
The Case of the Dognapped Cat
Sale price
$858
Chapter Book · Ages 8–12 · 1997

The Case of the Dognapped Cat

By Milly Howard · Book #1 in the Crimebusters Inc. series

A team embarks on a thrilling journey to solve baffling mysteries.

128 pages· 20,762 words· Est. 3 hour read
3.8 Goodreads · 79 ratings
$8.99Save 5%
Paperback
Summary: The Crimebusters are on the brink of their first big case, diving into a world of secrets and intrigue. As they unravel each mystery, they face unexpected challenges that test their skills and teamwork. Will they crack the case, or will the truth remain elusive? Join them on a thrilling adventure where every clue counts and nothing is as it seems.
Banana Fox and the Gummy Monster Mess
Graphic Nov.
Sale price
$759
Chapter Book · Ages 6–8 · 2022

Banana Fox and the Gummy Monster Mess

By James Kochalka · Book #3 in the Banana Fox series

A detective agency solves a mystery involving a missing turtle and a secret society

80 pages· 2,615 words· Est. 39 min read
4.2 Goodreads · 101 ratings
$7.99Save 5%
Paperback
Summary: Banana Fox faces a puzzling mess when the jail is destroyed and Sour Grapes escapes. With only a few clues and plenty of red herrings, he teams up with Sharyanna, William, and the unexpected Sour Grapes Jr. to unravel the mystery. Can they catch the baddies, or will chaos reign? Dive into this hilarious adventure where nothing is as it seems, and every twist leads to more questions.
The Menace at the Mall
Sale price
$1248
Chapter Book · Ages 8–12 · 2024

The Menace at the Mall

By Steve Behling, Arianna Rea (Illustrator) · Book #3 in the Agent Stitch series

Alien detective Stitch must stop a new threat in Seoul using spy skills and music.

224 pages· 24,412 words· Est. 3.5 hour read
3.8 Goodreads · 43 ratings
$12.99Save 4%
Hardcover
Summary: Agent Stitch, the alien detective, faces a new threat in Seoul. With Earth in peril, he teams up with a K-Pop girl group to thwart a devious alien plot. Can Stitch blend his spy prowess with his musical passion to save the day? The stakes are high, and time is running out.
The Bookroo Book Club

Great books, picked for their age.

Books worth reading again and again, delivered to your door.

Find their book club