Long before Steve Irwin and decades before the Bush Tucker Man, a pair of brothers called the Leylands bestrode the continent as pioneers of outback film making. For 30 years, their television programs attracted huge audiences and their partnership remained strong. Mike Leyland died six years ago. This week the surviving Leyland, Mal, reveals the inside story of their rise and fall. And for the first time he talks about why they went their separate ways...