Itchy fleas have taken over the world, and readers are called on to help solve the mystery in this tongue-in-cheek caper starring a slightly bumbling canine spy and featuring several pullout clues.

It all starts with a headline in the Daily Dig: "Megafleas Attack! Can We Beat the Itch?" It¹s a r-r-rough time for dogkind, but luckily Secret Agent Barker — the only flea-free agent around — is hot on the trail, sniffing out clues. Who is behind this pesty crime? Is there a cure that will put the deep freeze on these nasty fleas? Readers are implored to help Agent Barker as he digs up evidence to solve the itchy mystery — with the help of foldout newspapers, maps to pore over, letters to open, a file full of pictures, and many more novelty surprises.