Pandora's Box

Pandora's Box is a mysterious door with a golden ? mark on it that is found in the HOH room on occasion, making its first appearances in Big Brother during season 11. This borrows from the Greek myth of a box that contained all the evils in the world disguised as something good. If opened, the evils would be unleashed upon the world, but possibly bring something good with it as well. This holds true in Big Brother, for when the Box is opened, it unleashes something good onto to Head of Household and treacherous unto the House, or something good onto the house and something bad for the HOH.

Trivia

 * Thus far, Ian Terry is the only House Guest to open two boxes in the same season.
 * So far, Ian Terry has opened the most boxes overall with 2.
 * Thus far, no one has passed up opening the box.
 * Season 15 is the first to not feature Pandora's Box since the twist started.