Tempting Fortune is back for a third season on Channel 4 with a new group of contestants put through their paces in the ultimate test of temptation.As ever, the series sends 12 strangers on a gruelling 13-day trek through the tropics of Langkawi, Malaysia, stripped of home comforts and surviving on basic rations. The group starts with a shot at a share of a £300,000 prize pot, but along the way they face a stream of tantalising temptations, from…