Four strangers and six weeks: this is all that separates Mara from one life-changing payday. She was surprised when reality TV producers came knocking at Primal Instinct, the survival school where she teaches rich clients not to die during a night outdoors, and even more shocked to be cast in their new show, Civilization. Now she just has to live off the land with her fellow survivors for long enough to get the prize money. Whisked by helicopter to...