Tank & Fizz
The Case of the Slime StampedeBook - 2015
"Meet Tank, a technology- tinkering troll, and Fizz, a goblin detective with a soft spot for choco-slug cookies. Together, they'll have to outwit their eight-legged principal and meddle with forbidden magic if they're going to solve this slimy mystery! The cleaning slimes have escaped, leaving a trail of acidic ooze throughout the schoolyard. Who's behind the slime stampede?" -- Back cover.