Kersten Hamilton 
Mesmer Menace [EPUB ebook] 

Welcome to the Amazing Automated Inn, home of twelve-year-old inventor Wally Kennewickett, his genius scientist parents, and hisdashing dog, Noodles. 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 the evil Mesmers, horrible hypnotists bent on controlling the minds of powerful people. It seems the inn is their first stop on the way to world domination . . . and only an ingenious boy, a staff of automatons, and a brave dachshund stand in their way!