Two hundred years ago Sydney was where petty criminals were sent to rot. One hundred years later, after a visit to Sydney, Mark Twain wrote, 'God made the harbour but Satan made Sydney'. A century after that, according to Newsweek, 'Sydney is one of the richest, hottest cities in the world'. And that sums Sydney up: a former gaol that grew into a hedonistic city on the most beautiful harbour in the world, who's time has finally come. But Sydney has another side, a secret side and that is what we explore in this program.