As China has transformed itself into an economic powerhouse, billions of dollars have been illegally spirited out of the country. A large amount has made its way here to Australia. Chinese authorities want the money back, and they've sent a clear message to anyone who has broken their rules - we will find you and your money. Now China has opened up a new front in its war on those accused of financial crimes. On Monday Four Corners will reveal the new tactics being used by Chinese authorities to take back money they believe has been stashed illegally in Australia.