Liam O'Donnell

The Case of the Slime Stampede is the first book in the Tank & Fizz mystery series about two crime-solving monsters living under a mountain.

When Gravelmuck Elementary's cleaning slimes escape and destroy the schoolyard with their acidic ooze, all claws and tails point to Mr. Snag, the school's caretaker, as the culprit. Determined to clear Mr. Snag's name, Tank and Fizz dive into the case, only to discover that the goop

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This book, in graphic novel format, follows the adventures of Max Axiom as he explains the science behind food chains.

When their school bus veers off course while taking the kids from Gravelmuck Elementary on a field trip, monster detectives Tank and Fizz witness a crime that brings them snout to snout with Rockfall Mountain's oldest monster, the ancient dragon Firebane Drakeclaw.