Plot: A life-threatening parachuting accident was the catalyst that persuaded Jim Alston to pursue his "Robinson Crusoe" dream, while his partner Kim Nguyen also had a near-death experience in a horrific car crash. In 2017 Ben Fogle went to visit the pair on the aptly named Wilderness Island off Australia’s north-western cape, where he got a lesson in the art of mud-crabbing and the necessity for fresh water (which the island was without)