'Once upon a Hume volume four pursues our journey down the Great Southern Road, as the Old Hume Highway was once known. We follow the original route, moving from personality to personality, catching up with some of the intriguing folk who lived near, or preyed upon, or prospered there, from its earliest days. Few of these folk or features are well-known. All have a story to share. Rapine, revels and reverence at Jerrawa. The eight bewhiskered sons of Henry Manton. Two doughty Yass ladies not to be trifled with. Mount Bowning, unlicked. Deep waters at Burrunjuck. 'Spider' Martin and the Bookham Battler. The mystery of Mary Mathews. The flivver and the monkey nose. The Jugiong rioters. Apocalypse at Coolac. The parable of the Warby Brothers at Mingay. Gunda-guys, Gunda-girls, a famous visit to the Niagara Cafe...and many other persons and prominences.' (Publication summary)