Matt reads a letter from his wife that was hidden inside a knife handle.

More determined than ever, Matt tries to hunt down the other survivalists.

Matt wakes up to find his camp burning down around him.

Matt Wright prepares to begin his Africa XL challenge all alone.

All-Star survivalists take on an unprecedented challenge in the jungle.

Jeff and Laura explore the jungle to find more resources after a typhoon.

Jeff and Laura prepare for the difficult 12-mile journey ahead of them.

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

Jeff and Laura must secure protein, besides snails, and find water.

Seven people with superhuman skills take on a brutal obstacle course.

Primitive survival expert Matt Graham demonstrates how to build an atlatl.

Primitive survival expert Matt Graham demonstrates how to build a fire.

Survival expert Matt Graham demonstrates how to purify drinking water.

Primitive survival expert Matt Graham builds a lookout from a small tree.

Primitive survival expert Matt Graham demonstrates how to fell a tree.

Primitive survival expert Matt Graham demonstrates how to build a smoker.