Matt Wright

With the $100,000 prize on the line, the final gauntlet of challenges tests each survivalist's bushcraft, bow and fire-making skills; the competition is neck-and-neck, with all three competitors seconds from claiming the title of Last One Standing.

The friction fire challenge shakes everyone. Patrick is stunned when he must give up his gathered materials.

Twelve of the toughest and most experienced all-stars from "Naked and Afraid" take on South Africa's punishing Oribi Gorge in a completely new type of challenge.

Under the sweltering Outback sun, competitors scramble to build Aboriginal dome shelters and avoid elimination. Medics race to give aid when Laura suffers whiplash, and Trish gets toxic sap in her eye.

Pushed to the brink, three competitors send shockwaves through the Outback. All camps are disbanded, and challenges going forward will be solo tests.

A top contender's shocking exit rocks the competition.