Darnell Hamilton

The castaways must figure out which attribute -- brains, brawn or beauty -- will be the thing that helps them win the most grueling competition yet.

Contestants compete for a hearty food reward in a classic challenge; one castaway interrogates a fellow teammate.

The castaways change things up in a tribe switch.

A tribe separation results in the ultimate sabotage; a line is drawn in a tough reward challenge.

A surprising turn of events at tribal council stuns the entire tribe; castaways have to choose between food, love or a game advantage.

The merger sets off a power struggle between the remaining members of the tribes; an all-girl alliance could cause problems for one castaway.