Laura Zerra

Just days before extraction, a grizzly bear mauling leads to a frightening search-and-rescue mission; Montana delivers a ferocious windstorm the night before extraction; Jake's damaged feet have medics looking to pull him from his final challenge.

An overnight snowstorm tests the survivalists' will; pushing through foot injuries, Jake scavenges a challenge-changing food win; with Jeremy struggling, Trish needs to step up; heart conditions put Sarah and Joe's challenges at risk.

Wes confronts Sarah as a mountain lion stalks the survivalists.

Facing an unprecedented two-day extraction, the final eight survivalists hunt, fish and trap potential food; an emergency overnight in the jungle causes fears and tensions to flare; Malorie's struggles cause medics to step in.

Twelve brave souls take on their first XL challenge in the Colombian Badlands; survivalists must battle disease-carrying insects, scorching heat, six-foot caiman and stalking jaguars; they must trek 40 miles in 40 days.