Gadgets and Gears, Bk 1: The Mesmer Menace

From the lightning harvester on the roof to the labs full of experiments in the dungeon, the inn is a wonderful place for a curious boy and his loyal dog to live. That is, until President Theodore Roosevelt himself calls the elder Kennewicketts away, leaving Wally and Noodles to face horrible hypnotists bent on controlling the minds of people.