Charlie Frattini

Twelve elite survivalists take on their toughest location yet, Montana's sub-freezing Rocky Mountains.

Tensions start to rise between teams as they get territorial over hunting ground. Plus, one survivalist is bitten by a snake and requires urgent medical attention.

With the extraction day looming, two more critical survivalists struggle. Plus, Jeff changes strategy but a medical emergency stops him in his tracks.

Adam, Heather and Sam score a massive protein win, but the trek through Colombia's badlands puts the team at risk. Chris battles a mystery illness. Nathan reveals a secret to his partners. The Proving Grounds send a survivalist home.

Three of the remaining teams trek through the dense, snake-filled jungle. The journey quickly turns to chaos and one survivalist must be medically evacuated.

Waz struggles on his first day in the jungle alone whilst Steven battles plummeting temperatures. Plus, another ruthless storm tests the survivalists.