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.

For an unprecedented 60-day survival challenge, Naked and Afraid survivalists Laura Zerra and Jeff Zausch, take on a punishing Philippine jungle. To make it all the way, they must be willing to become savage.

After a sleepless night due to painful fire ants, Jeff and Laura must improve their drinking water situation. Another priority will be to secure substantial protein, besides snails, if they want to make it to Day 60.

Jeff and Laura get smacked with a dangerous, destructive typhoon that destroys all their progress and tests their mental strength as elite survivalists.

After losing their shelter and supplies during a typhoon, Jeff and Laura explore the jungle to find more resources, a turning point in their 60-day challenge.

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.

Trapped in the jagged canyons of Croatia's Velebit Mountain, new partners Grady and Josh must work together to navigate the frigid, fast-moving rapids, and descend treacherous waterfalls in order to find salvation in this remote landscape.

Grady and Josh slash their way through the Nicaraguan jungle battling snakes, mosquitoes and dehydration. They struggle to start a fire using a soil testing kit, go on a nighttime hunt for caiman and build a raft to cross croc-infested waters.

On the punishing slopes of Bulgaria's Rila Mountains, Grady and Josh face a whiteout blizzard, freezing temps and a run-in with a deadly predator. They must use unconventional methods to secure fire, shelter and food on this quest for civilization.

Shipwrecked on an island in the South China Sea, castaways Grady and Josh demonstrate their resourcefulness by repurposing garbage on the beach to desalinate water, construct shelter, hunt for food, and ultimately signal for rescue.

Stranded in the high altitudes of the Peruvian Andes, Grady and Josh battle crippling altitude sickness and the hallucinations that come with it. They must find fresh water fast in order to navigate this rough landscape in pursuit of civilization.

Air Force veteran Bo McGlone teams up with former Green Beret Grady Powell on Wyoming's frigid Big Horn Mountains in the dead of a brutal winter. Navigating the exhausting, snowy terrain will push them to their limits.

Military Veterans Grady Powell and Bo McGlone are dropped into separate locations of a Colombian jungle to play out a military operation gone awry. With only a map and machete, they must survive in the dense jungle while trying to find rescue.

Dual Survival has featured incredible survival tricks that have shown viewers how to acquire food, shelter, fire and water in the wilderness.This Ultimate Survival Bible features some of the most innovative approaches to survival ever shown.