Book Series · 5 Books

The Code Busters Club Books

In order from The Haunted Lighthouse to The Search for the Missing Mascot.

The Code Busters Club series is a set of 5 chapter books by Penny Warner, published between 2012 and 2025. Written for ages 8–12, most books run about 180 pages.

Where the story begins

First Book in the Series

Sale price

$674

Book #2 · Chapter Book · Ages 8–11 · 2012

The Haunted Lighthouse

By Penny Warner

A cryptic message sends young code enthusiasts on a treasure hunt at Alcatraz.

208 pages

$6.99Save 4%

Paperback

Summary: Cody and her friends, the Code Busters, embark on a thrilling treasure hunt on Alcatraz Island. Armed with their love for codes, they unravel a series of cryptic messages left by a notorious jewel thief. As they navigate the infamous prison, each clue brings them closer to a hidden fortune. Will their code-breaking skills be enough to uncover the island's secrets? Join the adventure and solve the puzzles alongside them, from Morse code to zigzag code, in this interactive mystery that challenges both the mind and the imagination.

In reading order

The Code Busters Club Series

5 books · Published 2012–2025

#2 in Series

Sale price

$674

The Haunted Lighthouse

Chapter Book · Ages 8–11 · 2012

A cryptic message sends young code enthusiasts on a treasure hunt at Alcatraz.

#4 in Series

Sale price

$1597

The Mummy's Curse

Chapter Book · Ages 8–12 · 2014

Kids crack codes to uncover a museum forgery before they're framed.

#5 in Series

Sale price

$674

The Hunt for the Missing Spy

Chapter Book · Ages 8–11 · 2015

A school trip turns mysterious as coded messages and a missing classmate challenge young detectives.

#6 in Series

Sale price

$1597

The Secret of the Puzzle Box

Chapter Book · Ages 8–12 · 2016

Uncover hidden messages and a mysterious box on Angel Island. Can you crack the code?

Series

Sale price

$2279

The Search for the Missing Mascot

Chapter Book · Ages 8–12 · 2025

Can the Code Busters solve the mystery of the missing mascot and stolen items?

Good to know

Common Questions

How many books are in the Code Busters Club series?

There are 5 books in the Code Busters Club series. It began with The Haunted Lighthouse in 2012, and the newest book, The Search for the Missing Mascot, was published in 2025.