Bookroo
Shop
Kids Book Clubs
Curated, monthly book deliveries
Beautiful Collections
Sets of beautiful children's books
Mini-Clubs
Our favorite books in mini color sets
Create a Book Registry
Create a book wishlist and and share it with family and friends
Books
What's New in Books
View bestsellers, featured, top rated, classics, hidden gems, and new releases.
Find a Book
Explore books by genre, topic, reading level, or series to find your next read.
Preview Library
Need your next book? Read the first few pages of a book using our preview library.
Schools
Classroom Reading Tools
Reading challenges, digital rewards, and other tools to motivate readers.
Book Quizzes for Students
Validate reading with our book quizzes or create your own custom assessments.
Host a Book Fair
Books for your students and funds for your classroom.
Sign in
Search
Top 10 Mystery, Espionage And Detective Middle Grade Books
7.0
#1 in Series
01
The Mysterious Benedict Society
Written by
Trenton Lee Stewart
& illustrated by
Carson Ellis
7.0
#2 in Series
02
Kidnap on the California Comet
Written by
M. G. Leonard
and
Sam Sedgman
& illustrated by
Elisa Paganelli
7.0
#7 in Series
03
Spy School British Invasion
Written by
Stuart Gibbs
6.8
04
Notorious
Written by
Gordon Korman
6.3
#1 in Series
05
Escape from Mr. Lemoncello's Library
Written by
Chris Grabenstein
6.0
06
The Invention of Hugo Cabret
Written and illustrated by
Brian Selznick
6.0
#5 in Series
07
Mr. Lemoncello and the Titanium Ticket
Written by
Chris Grabenstein
6.0
#1 in Series
08
City Spies
Written by
James Ponti
5.8
#3 in Series
09
The Crown Heist
Written by
Deron R. Hicks
5.8
#1 in Series
10
The Story Collector
Written by
Kristin O'Donnell Tubb
& illustrated by
Iacopo Bruno
Mystery, Espionage And Detective
Middle Grade Books
Audience
Grade Level
Age
All Books
Board Books
Picture Books
First Reader Books
Early Reader Books
Junior Reader Books
Middle Grade Books
Young Adult Books
All Books
Books for Pre K
Books for 1st Graders
Books for 2nd Graders
Books for 3rd Graders
Books for 4th Graders
Books for 5th Graders
Books for 6th Graders
Books for 7th Graders
Books for 8th Graders
Books for 9th Graders
All Books
Books for 0-3 Year Olds
Books for 3-5 Year Olds
Books for 6-8 Year Olds
Books for 9-12 Year Olds
Share
chapter • 485 Pages
7.0
#1 in Series
undercover operations
ᐧ
teamwork
ᐧ
rules
chapter • 533 Pages
6.0
inventions
ᐧ
innovation
ᐧ
trains and railroads
chapter • 320 Pages
5.8
#1 in Series
chapter • 299 Pages
5.5
quests
ᐧ
problem solving
ᐧ
mythical creatures
chapter • 240 Pages
5.5
Series
chapter • 144 Pages
5.3
#1 in Series
friendship
ᐧ
mystery and detective
ᐧ
technology
chapter • 288 Pages
5.0
sisters
chapter • 176 Pages
5.0
Series
chapter • 258 Pages
4.5
Series
chapter • 154 Pages
#1 in Series
spies
ᐧ
diaries
ᐧ
Colonial and Revolutionary periods
chapter • 304 Pages
chapter • 304 Pages
chapter • 256 Pages
#1 in Series
chapter • 352 Pages
7.0
#7 in Series
chapter • 304 Pages
6.0
#5 in Series
chapter • 272 Pages
5.8
#1 in Series
books and libraries
ᐧ
solving crimes
ᐧ
haunted places
ᐧ
pranks
chapter • 216 Pages
5.5
social classes
ᐧ
lost and found possessions
ᐧ
solving crimes
Books about problem solving
See Books
chapter • 344 Pages
5.3
chapter • 224 Pages
5.0
#1 in Series
chapter • 199 Pages
5.0
#3 in Series
space and time
ᐧ
letter writing
ᐧ
psychic abilities
ᐧ
worrying
chapter • 279 Pages
4.5
Series
chapter • 240 Pages
Series
law and crime
ᐧ
mystery, espionage and detective
chapter • 272 Pages
chapter • 304 Pages
Series
chapter • 138 Pages
Series
chapter • 256 Pages
7.0
#2 in Series
chapter • 336 Pages
6.3
#1 in Series
books and reading
ᐧ
the library
ᐧ
games
ᐧ
problem solving
chapter • 303 Pages
5.8
#3 in Series
chapter • 352 Pages
5.8
#1 in Series
chapter • 180 Pages
5.5
#1 in Series
chapter • 160 Pages
5.5
chapter • 416 Pages
5.0
Series
chapter • 224 Pages
5.0
#1 in Series
chapter • 240 Pages
4.8
chapter • 389 Pages
Series
codes, ciphers and puzzles
ᐧ
spies
chapter • 272 Pages
Series
chapter • 272 Pages
Series
chapter • 294 Pages
Series
chapter • 307 Pages
6.8
buried treasure
ᐧ
islands
ᐧ
solving crimes
chapter • 378 Pages
6.0
#1 in Series
spies
ᐧ
coding and programming
ᐧ
problem solving
ᐧ
hackers
chapter • 368 Pages
5.8
chapter • 348 Pages
5.5
#1 in Series
chapter • 368 Pages
5.5
#1 in Series
sleuthing
ᐧ
books and reading
ᐧ
treasure hunts
ᐧ
secrets
chapter • 192 Pages
5.3
the environment
ᐧ
bullying
ᐧ
diseases
chapter • 240 Pages
5.0
#1 in Series
imagination and play
ᐧ
Egypt
ᐧ
making friends
chapter • 286 Pages
4.8
#9 in Series
picture • 320 Pages
4.0
Series
Books about spies
See Books
chapter • 240 Pages
#6 in Series
Graphic Nov.
chapter • 280 Pages
Series
chapter • 368 Pages
Load more
Bookroo
About Us
Blog
FAQs
Help Center
Contact Us
Affiliates
Book Clubs
B
Board Book Club
P
Picture Book Club
J
Junior Chapter Book Club
M
Middle Grade Book Club
Gift a Book Club
Book Store
B
Book Registries
Beautiful Collections
Schools
C
Classrooms
B
Book Fairs
Schedule Demo
Resources
Book Platform
Find a Book
Reading App
Community Editors
Authors & Illustrators
Get Your Book Reviewed
Submit Original Work
Follow Bookroo
© 2025 Bookroo
Terms of Service
Privacy Policy