Eighteen players returned this season from earlier seasons. In the beginning, they were divided into three tribes: Chapera, Mogo Mogo, and Saboga. Each tribe was named after an island of the Pearl Islands. During the fifth episode Reward Challenge, the Saboga tribe lost the award, and its members divided between the other two tribes (called "dissolving"). During this period, an alliance between Rob M, Amber (who already had their own alliance early in the game), Rupert and Jenna L. would become dominate for Chapera. Also, during this time, two players chose to leave the game. Jenna Morasca, who was worried about her mother's health, chose to leave the game. Her mother died eight days later from cancer. Susan "Sue" Hawk left angry in episode six, one day after a problem during an immunity challenge where a naked Richard Hatch had quick but inappropriate bodily contact with her.