It's a race to the finish line when The Amazing Race Australia returns home for the winners to be crowned tonight. In Singapore, the teams seek their race riches from a local fortune teller; while a 55 storey tight-rope crossing Detour tests their nerves. Back in Australia, they search Fremantle Prison for their next clue. But the final challenge brings them all unstuck as they struggle to remember the highlights of their epic journey. Only one team will persevere to get to the finish line first and take home the $250,000 prize.