Winner of the prestigious Golden Kite Award, author Katherine Applegate delivers the sixth amusing tale from her popular Roscoe Riley series. A new fad has broken out in Roscoe's class-sneakers with built-in walkie-talkies. Roscoe is lucky enough to own a pair, but his buddy Gus isn't so fortunate. Gus' mom won't buy him new shoes until his old ones are worn out. Good thing for Gus, Roscoe is an expert at destroying old shoes.