The Hero

This week's challenges have the contestants pushing an all-terrain vehicle through the streets of Colon City, flying in helicopters and navigating a dangerous "dry dock" as it fills with water rushing in from the Panama Canal.

With trust issues already growing, contestants are offered temptations as they navigate the Panamanian jungle and handle huge snakes in the Team Challenge.

At the beginning of this week's episode, a huge twist is revealed by Dwayne Johnson. Then in this week's Team Challenge, contestants take death-defying leaps off a building and climb 40 stories up an abandoned elevator shaft.

When contestants are forced to take a lie detector test about each other as part of the Team Challenge, tensions rise in the house.

Contestants test their skills with primitive weapons and navigate a dangerous underground cave in the Team Challenge.