Dink writes to his favorite author, mystery writer Wallis Wallace, and invites him to visit Green Lawn. Wonder of wonders, Wallace says yes! In fact, the famous writer says that the only way he won't come is if he's kidnapped. But when the big day comes, Wallis Wallace is nowhere to be found. The police think he just missed his plane, but Dink knows better. It's up to Dink and his two best friends, Josh and Ruth Rose, to find Wallace before it's too late!