An epic saga of brotherhood, betrayal and revenge.

On the unforgiving streets of 1920s Sydney, the Leach family have nothing but each other.

In a tale spanning decades, three children of the broken, working-class family find adventure, heartache and trouble as their lives drift apart.

John finds faith and love at a young age. The inevitable clash between the two leads him into a different kind of brotherhood as war clouds gather.

Maureen dreams of a life 'just like the movies' and waits to be swept off her feet. Yet at every crossroad, she makes the wrong choice.

Bob discovers a natural talent with his fists and an instinct for trouble. But with every win he earns the hard way, more enemies rise.

From police corruption and gambling dens to brothels and blood feuds, the Leach family toil in Sydney's seedy underbelly and on battlefields far away. Against the backdrop of the Great Depression and the Second World War, The Youngest Son chronicles one family's mesmerising fate in a grand saga and a masterclass in epic storytelling.