This book will self-destruct

This work will explode in 5 minutes. NO TIME TO LOSE! Agent Harrier must follow the red wire and diffuse the bomb before it's too late. Will our canine spy extraordinaire save everyone from being blasted to smithereens? And just WHO planted the wretched bomb in the first place?! Be careful not to bark up the wrong tree, Harrier - it looks like something very fishy could be apaw.