Book Series · 5 Books

Tank & Fizz Books

In order from The Case of the Slime Stampede to The Case of the Tentacle Terror.

The Tank & Fizz series is a set of 5 graphic novels by Liam O'Donnell, published between 2015 and 2019. Written for ages 8–12, most books run about 210 pages.

The Case of the Slime Stampede
The Case of the Battling Bots
The Case of the Missing Mage
The Case of Firebane's Folly
The Case of the Tentacle Terror
Where the story begins

First Book in the Series

The Case of the Slime Stampede
Graphic Nov.
Sale price
$1049
Book #1 · Chapter Book · Ages 8–11 · 2015

The Case of the Slime Stampede

By Liam O'Donnell, Mike Deas (Illustrator)

Monsters must solve a slime mystery to clear an innocent name.

152 pages· 18,290 words· Est. 3.5 hour read
$10.95Save 4%
Paperback
Summary: Tank and Fizz, two monster detectives, face a slimy disaster at Gravelmuck Elementary. With the school's caretaker accused, they must unravel a mystery beneath Rockfall Mountain. As they navigate a world of high-tech janitors and magical wizards, the duo confronts their eight-legged principal and an ancient conflict. Can they uncover the truth behind the slime stampede and save Mr. Snag? Dive into a world where nothing is as it seems, and every clue leads to more danger.
The complete set

Tank & Fizz Series

5 books · Published 2015–2019

Series
Graphic Nov.
Sale price
$1049

The Case of the Slime Stampede

Chapter Book · Ages 8–11 · 2015

Monsters must solve a slime mystery to clear an innocent name.

The Case of the Battling Bots

Chapter Book · Ages 8–11 · 2016

Detectives face a hacker and ancient demon threat in a robot showdown.

The Case of the Missing Mage
Series
Graphic Nov.
Sale price
$1049

The Case of the Missing Mage

Chapter Book · Ages 8–11 · 2017

Wizards vanish at Shadow Tower. Can monster sleuths solve the mystery before dark magic prevails?

The Case of Firebane's Folly

Chapter Book · Ages 8–11 · 2018

Two monster detectives must recover a stolen crown to save their classmates from a dragon.

The Case of the Tentacle Terror

Chapter Book · Ages 9–12 · 2019

Ships vanish, a harbor master loses her job, and goblin detectives face kobold pirates.

Good to know

Common Questions

How many books are in the Tank & Fizz series?

There are 5 books in the Tank & Fizz series. It began with The Case of the Slime Stampede in 2015, and the newest book, The Case of the Tentacle Terror, was published in 2019.

What ages are the Tank & Fizz books best for?

The series is best for ages 8–12, based on the age ranges of the individual books.

Which Tank & Fizz book is the longest?

The Case of Firebane's Folly is the longest book in the series at 27,535 words (256 pages).

Which Tank & Fizz book is the shortest?

The Case of the Slime Stampede is the shortest at 18,290 words (152 pages).

The people

The Creatives Behind the Books

The authors and illustrators who bring Tank & Fizz to life.

01

Liam O'Donnell

Author
02

Mike Deas

Illustrator

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