 9 contestants and 1 mole (mol). The nine contestants have to complete several challenges, each worth a certain amount of money. They have to complete the challenges successfully to win money. When a challenge is lost, they loose also money. The tenth contestant, the mole, should sabotage as many of the challenges as possible though he/she must appear like one of the others to avoid suspicion. At the end of the day the contestants and mole get 20 questions about who they think the mole is. Who ever knows least about the mole gets eliminated and goes home, with nothing. At the end of the series only 1 person will win the total amount of money.