It started out with just one little lie. But now, everybody is coming down with the dreaded disease—Priscilla, parents, even Super-dud, er, Super-dog, Splat. They go to bed perfectly normal one night, then wake up the nest morning with jet-powered toenails! Who knows the truth behind this awful sickness? Who can stop it? Only Secret Agent Dingledorf and his not-so-trusty (at least in this book) sidekick Splat can find the cure and save the day...while discovering how important it is to be honest and tell the truth.