Global Guardians Global Guardians
Global Guardians · Book One

The Tower
Thief

The Eiffel Tower vanished overnight. Two twelve‑year‑old agents have until the world wakes up to steal it back.

Ages 8–12A globe‑trotting mysteryby K.J. Allen
Early pencil storyboard of Paris
The Tower Thief — cover
BOOK1
Global Guardians · Book One

THE TOWER
THIEF

The Eiffel Tower vanished overnight. Two twelve-year-old agents have until the world wakes up to steal it back.

Get your copy See how it came to life
Storyboard thumbnails
The Tower Thief — cover
Villain study sketch
The making of

Every adventure starts
as a scribble.

Before the Eiffel Tower ever shimmered out of sight, it lived in a notebook — rough thumbnails, midnight ideas, and pencil storyboards. Here's the road from first sketch to finished cover.

Pencil establishing shot of Paris
Establishing shot — Paris at dawn
Catacombs sequence thumbnails
Thumbnails — the Catacombs chase
The midnight call sketch
The midnight call — 12:07 AM
From pencil to full color

Meet the man who stole a tower.

Dr. Aldric Noir began as a few loose pencil lines — a top hat, a trench coat, a smirk. Watch him sharpen into the thief the whole world is hunting.

↔︎ Drag the handle to reveal

Dr. Noir — final art
Dr. Noir — concept sketch
Pencil Full color
↔︎
Concept sketch
pencil
Final art
full color

And these scribbles came alive.

Each storyboard rough became a full-color spread. Here are two, sketch beside finish:

Storyboard sketch of the Guardians at the Water Lilies Pencil
The Guardians hunt for the key at the Water Lilies Full colour
Hunting for the key where the lilies gleam.
Storyboard sketch of Dr. Noir cornering the Guardians Pencil
Dr. Noir corners the Guardians in the gallery Full colour
“Tsk, tsk, little spies. You're too late.”
The cast

Meet the Guardians

Twins by day, secret agents by night — the two Guardians at the heart of the mission.

Max Carter

Max Carter

Puzzle-solver · Guardian

Cracks codes faster than he can tie his shoes — and never says no to a midnight mission.

Lila Carter

Lila Carter

Historian · Guardian

Max's twin and the team's walking history book. If it happened, Lila remembers the date.

…with help from Camille, lead agent of the Paris division.

The series

Book one of many.

The Global Guardians protect the world's monuments from those who'd erase them. Paris was only the first stop — the world is full of treasures worth saving.

PARIS BOOK 1 ✓ LONDON BARCELONA AGRA more on the way…
Global Guardians badge
one badge. one team. every landmark on Earth.
The Tower Thief — cover The G-Link communicator
Get your copy

The clock is ticking.

When siblings Max and Lila stumble upon a hidden network of kids operating across the world, they discover an incredible truth: some of Earth's most famous landmarks aren't just historical treasures — they're targets.

Armed with quick thinking, teamwork, and a love of puzzles, they're sent on a globe-spanning mission that blends adventure with real-world history.

Get your copy
Ages 8–12 · Paperback
ISBN 979-8-9964287-0-0
Author

K.J. Allen

K.J. Allen writes adventure stories that smuggle real history into the fun — secret codes, world landmarks, and kids who are smarter than the grown-ups give them credit for. The Tower Thief is the first Global Guardians mission.

Illustrator

Marian Domínguez

Marian drew every Guardian, gadget, and getaway in this book — from the first pencil thumbnail you saw above to the finished cover. The look of the Global Guardians is hers.