House of Cain — Arthur W. Upfield

Upfield's first published novel 1929: Austilene Thorpe is accused of murder but then disappears from gaol. Her fiance, Martin Sherwood, goes blind from shock. His famous adventuring brother Monty, learns that Austilene is in a refuge for murderers in the far north-east corner of South Australia, and together the Sherwoods set out to find her and bring her back to Melbourne...