Case of the Hot-Air Ba Boom! (Famous 5 Case Files #7-8)

Enid Blyton

There are two stories/TV episodes in each book so they are 'flipper' books, with a front cover for each story.THE CASE OF THE HOT-AIR BA-BOOM!The Five enter a cross-country balloon race! THE CASE OF THE STINKY SMELL What is causing the mysterious explosions? It's not Max!...