Alone 3-11

A shock medical complication threatens to remove one of our toughest participants, while isolation begins to take its toll.

Ten survivalists take on the wilderness of New Zealand's South Island, documenting their own isolated battles and striving to be the last person standing to win $250,000.

The survivalists' bodies are under more stress than ever before. As winter closes in, a swell of rain raises the lake's level, potentially putting shelters at risk.