Finding a Hidden Immunity Idol on Survivor is a castaway's best-kept secret. Put simply, having one in your possession means you can present it anytime at Tribal Council to secure your safety through to the next week.
See what happened when Kelley Wentworth found a Hidden Immunity Idol under the shelter.
Don't forget to check out the premiere of Survivor: Kaoh Rong on Wednesday, Feb. 17 at 8/7c on CBS! Plus, catch up on past seasons through CBS All Access.