Extreme isolation takes its toll on the rest of the participants in the wild; each man's battle turns to the mind as well as the elements.

This article was originally published on precincttv.com as Gibbs faces his first Christmas alone in NCIS: Origins season 1, episode 10 (Preview).

After ten days in the Tasmanian wilderness, just three participants remain. Having survived the settling-in period, each contestant focuses on their own strategies.