Meet the team
Begin with City Spies; it recruits the first new agent and establishes the team's home, mission style, and relationships.
Book Series · 7 Books
City Spies Books
In order from City Spies to Europa.
A middle-grade adventure series about young agents from around the world completing high-stakes intelligence missions as a found family.
Reviewed by the Bookroo Editors Updated
Reading order
How to Read the City Spies Books
Read City Spies through Europa in numbered order. Each mission has its own setting and objective, but the team's relationships and larger threats carry forward.
Operation Oz is officially announced as book #8 but is not included in the published count yet.
Sources: Simon & Schuster's official City Spies inventory, Official Europa product page.
For parents
What Parents Should Know
The books feature child spies facing kidnapping, bombs, guns, poisoning, imprisonment, chases, injuries, and threats from criminals and hostile agents. The action is generally non-graphic and balanced by teamwork, humor, problem-solving, and the supportive family the young agents build together.
Where to start
Where Should a New Reader Start?
Where the story begins
First Book in the Series
Sale price
$1899
Book #1 · Chapter Book · Ages 8–12 · 2020
City Spies
By James Ponti
A young hacker joins a secret spy team to stop a villain and save the world.
378 pages· 64,521 words· Est. 9 hour read
6.0/7 Bookroo
$19.99Save 5%
Hardcover
Summary: Sara Martinez, a skilled hacker, faces juvenile detention until a British spy offers her a new life with a secret MI6 team. Now, part of the City Spies, Sara must navigate espionage, teamwork, and danger. As she heads to Paris, she must prevent a rival from winning a fortune and stop a looming threat. Can Sara and her diverse team of young spies outsmart the villains and save the day?
In reading order
City Spies Series
7 books · Published 2020–2026
#1
Sale price
$1899
City Spies
Chapter Book · Ages 8–12 · 2020
A young hacker joins a secret spy team to stop a villain and save the world.
#2
Sale price
$1797
Golden Gate
Chapter Book · Ages 8–12 · 2021
Young spies face a mole and double agents in a thrilling mission.
#3
Sale price
$1899
Forbidden City
Chapter Book · Ages 8–12 · 2022
Young spies face a global threat, infiltrating high-stakes arenas to stop a sinister plot.
#4
Sale price
$1899
City of the Dead
Chapter Book · Ages 8–12 · 2023
Young spies unravel cyberattacks, uncovering deeper mysteries in Cairo.
#5
Sale price
$1797
Mission Manhattan
Chapter Book · Ages 8–12 · 2024
Young spies race to protect a climate activist from a looming threat in New York City.
#6
Sale price
$1899
London Calling
Chapter Book · Ages 8–12 · 2025
Young spies race to rescue a missing sister and thwart a royal wedding threat.
#7
Sale price
$1797
Europa
Chapter Book · Ages 8–12 · 2026
Spies race to stop a criminal's escape and prevent attacks across Europe.
Good to know
Common Questions
How many books are in the City Spies series?
There are 7 books in the City Spies series. It began with City Spies in 2020, and the newest book, Europa, was published in 2026.
What order should you read the City Spies books in?
Start with City Spies and follow the series order — the books above are numbered #1 through #7.
What ages are the City Spies books best for?
The series is best for ages 8–12, based on the age ranges of the individual books.
Which City Spies book is the longest?
Forbidden City (Book #3) is the longest book in the series at 74,506 words (442 pages).
Which City Spies book is the shortest?
Europa (Book #7) is the shortest at 61,693 words (384 pages).
The people
The Creative Behind the Books
The people who bring City Spies to life.
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