An alliance of experienced players targets one of their own; Colton tries to stir up trouble at camp.
The contestants are shocked and relationships are tested when loved ones learn they will be competing against each other.
In one of the most physical reward challenges ever played, injuries threaten to send two castaways home before the first challenge is completed.
The eighteen All-Stars, from previous Survivor seasons, arrive at Panama already divided into three tribes, Chapera, Mogo Mogo and Saboga.
Sixteen contestants arrive on the Pearl Islands to discover that the competition has begun, and they must race to find supplies.