McKenzie Coburn

In a deep-diving competition, two teams break down when they can't handle the pressure. And an all-out knock-down brawl involving the entire house leaves the challengers hating each other even more than they could've imagined.

Knight launches a full on attack to get inside Nany's head and ends up tearing the house and his own relationship with Jemmye apart. And a pending elimination may spell the end for one of the house's budding romances.

Two new couplings start brewing in the Challenge house, one of which threatens to break apart a team AND ruin an entire alliance. And another season continues to break down, with one member exploding on her teammates.

In the finale, the top 3 teams face the toughest challenge of their lives, including gorging on a Viking's feast, tunneling through mounds of snow, and scaling a glacial mountain, in an effort to win $300K in prizes.