Twenty former castaways return to compete on Survivor: Heroes vs. Villains, the 20th installment of the hit television realitiy series hosted by Jeff Probst.

Survivor: Heroes VS. Villains will reunite some of the most memorable, heroic and controversial castaways from previous Survivor seasons. The series' best strategists will face off in their attempt to overcome - or embrace - the label placed upon them when they return to seek revenge or redemption, all in an effort to win the title of Sole Survivor.

These unforgettable castaways will compete deep in the South Pacific on the breathtaking island of Samoa and will be divided into two tribes of 10 comprised of the best Heroes and biggest Villains ever to play the game. The Heroes have been defined by their decisions of integrity, courage and honor, while the Villains have mastered their skills of deception, manipulation and duplicity.

The series will follow the relationships and conflicts that develop among the two divergent groups. Ultimately some castaways will be forced to choose between pre-existing relationships or tribe loyalty in the spirit of competition. What happens on a tribe full of Heroes? Will the Villains self-destruct or will they be able to co-exist?