Players in "The Mole" must work together to complete various physical and mental challenges to build up a significant prize for the winner. One of them, however, is "the Mole", a double agent hired by the producers to sabotage the efforts of the group. The Mole must be careful to avoid drawing too much suspicion to himself or herself. Using journals, players must track vast amounts of data about the person(s) they suspect of being the Mole, such as seating positions, clothing colors, minor discussion topics, and so on. The quiz at the end of each episode tests players' knowledge of the Mole, and determines by lowest score (or slowest time, in the event of a tie) who is eliminated from the game.