'Half a century ago, in the mid-1960s, my beloved grandfather, Dr Otto Walter, whom I referred to as 'papa' left by ship for overseas for an indeterminate period and, as a young child, I had no idea why. I was distraught. About two years following his departure, Otto returned. Passenger after passenger strode along the gangplank at Circular Quay, Sydney to be embraced by welcoming family, yet there was no sign of Otto.' (Introduction)
