Emotions run high as the final draws to a close; an unprecedented twist raises the stakes.

The final four rival pairs compete in the Final Challenge; some rival pairs struggle.

A rival pair seeks revenge to take back their star; one challenger threatens to quit the game.

The three pairs of rivals without a star consider more drastic strategies.

Nany worries that Turbo's attitude paints a target on their backs; Adam questions his alliance.

Accusations fly as several rival pairs try to figure out who is controlling the game behind the scenes; Shane targets an alliance member that he feels is threatening his position in the game and friendship with his long-time BFF, Veronica.

A star is up for grabs, and the six rival pairs without one fight tooth and nail in the first-ever Star Challenge for their ticket to the final; an unexpected outcome from the daily challenge causes the house to scramble like never before.

TJ puts a rivals spin on his favorite challenge of the season: trivia; tempers flare between two rival pairs when one challenger is caught supporting a strategy to throw in their real life best friend into the Jungle for possible elimination.

Rivals Aneesa and Ashley attempt to get back in sync after their blow up; Katie tries to school rivals Adam and Steve on playing a more aggressive game; the pressure is on to free up a star, tempting the winning team to make a big move.

Tension continues to brew between rivals Kelly Anne and Sylvia; Adam puts himself and his partner Steve's star at risk after coming down with a flu; at the challenge, another Rival pair is divided, leading to big misunderstanding back at the house.

With the four coveted stars claimed, the nine remaining rival pairs without a star are left to figure out how to take possession of one for themselves; at the next challenge, the Rivals are faced with one of their greatest fears: heights.

Twenty-six All Star competitors are paired up with their greatest enemy from seasons past; as bad blood resurfaces for some, the Rivals quickly learn that to win their share of the $300,000 grand prize, they must be able to work.