Richie shows a new classmate around the estate while trying to avoid showing off his wealth.; Richie cures his new assistant chauffeur, Fenwick, of vertigo.; Dot meets a boy who laughs at everything.; A bully thinks he's going to take over Lotta's neighborhood until he sees her catch a horse and rider in mid-air.; Richie uses his money belt to cross a ravine.; Gloria doesn't like Richie's new laugh machine.; Cadbury babysits a bunch of brats.