Book Series · 4 Books

Double Detectives Books

In order from The Secret of Skull Island to The Danger on Shadow Mountain.

The Double Detectives series is a set of 4 chapter books by Zack Norris, published between 2011 and 2012. Written for ages 8–12, most books run about 140 pages.

Where the story begins

First Book in the Series

Sale price

$470

Book #1 · Chapter Book · Ages 8–12 · 2011

The Secret of Skull Island

By Zack Norris

Mysterious events plague an island inn. Ghosts or pirates?

144 pages· 26,362 words· Est. 3.5 hour read

$4.95Save 5%

Paperback

In reading order

Double Detectives Series

4 books · Published 2011–2012

#1 in Series

Sale price

$470

The Secret of Skull Island

Chapter Book · Ages 8–12 · 2011

Mysterious events plague an island inn. Ghosts or pirates?

#2 in Series

Sale price

$470

The Monkey Howled at Midnight

Chapter Book · Ages 8–12 · 2011

Kids face danger in the Amazon: a smuggling ring and deadly threats await.

The Tunnel of Bones

#4 in Series

Sale price

$470

The Tunnel of Bones

Chapter Book · Ages 8–12 · 2012

Twins chase art thieves through Paris catacombs.

Series

Sale price

$495

The Danger on Shadow Mountain

Chapter Book · Ages 8–12 · 2012

Twins uncover dangerous secrets on a snowboarding trip. Can they stop the accidents before it's too late?

Good to know

Common Questions

How many books are in the Double Detectives series?

There are 4 books in the Double Detectives series. It began with The Secret of Skull Island in 2011, and the newest book, The Danger on Shadow Mountain, was published in 2012.