In 1986, a shy and intelligent twenty-year-old named Christopher Knight left his home, drove to the woods of Maine, and disappeared into the forest for 27 years, surviving by his wits and courage until he was finally arrested for stealing food. This remarkable true story is told by American Journalist Michael Finkel in his book The Stranger in the Woods: The extraordinary story of the last true hermit. In this episode of Nature Revisited, Michael discusses how he came to retell this gripping story of survival, the mystery behind Christopher Knight, and why Christopher's determination to live his own way is pointedly inextricable with humanity's origins.