Why Would You Trust Me?

S13, E11: When the Raro tribe of five merges with the Aitu tribe of four, Yul realizes he needs to sway one of the old Raro tribe members to join his underdog Aitu alliance. To do so, he decides to reveal his possession of the hidden Immunity Idol to a few select tribemates. Will the castaways stay true to their alliances or will this news stir up the game? Also, one castaway considers betraying their alliance at Tribal Council, but worries that this decision will cause drama back at camp.