Reaching a breaking point, Matt reads a letter from his wife that was hidden inside a knife handle. Overcome with emotion Matt is unsure he can continue the journey.

Even the greatest survivalists in the world are vulnerable to the crippling effects of isolation. Unwilling to give up and more determined than ever, Matt sets out to hunt down the other survivalists.

Matt wakes up to find his camp burning down around him. A fire forces Matt to face the grim reality of having almost been killed. It's his last chance to find XL tribe for his own safety and sanity.

All-stars Jeff Zausch and Laura Zerra, embark on a 60-Day challenge.

Jeff and Laura have a sleepless night due to painful fire ants.

Jeff and Laura get smacked with a dangerous, destructive typhoon.

Jeff and Laura explore the jungle to find more resources post-typhoon.

It's Day 21, and Jeff and Laura prepare for the difficult 12-mile journey ahead of them. At the end of the trek awaits a new challenge - to begin a new 40-day XL challenge with 12 strangers.

Nine people face hunger, fatigue and more on Venezuela's Mt. Roraima.

The group grows desperate at night with no water.

The survivalists face the realities of the backcountry in a new campsite.

The group finds shelter in a Pemon Indian hut as tensions rise.

The final six survivalists catch a break during a big fishing trip.

Nick and Brad are stuck in a flood while Ryan considers hitting the button.

A celebration is cut short and emotions run high for the last of the group.

Physical exertion takes its toll on the group's final push to escape.