Many antitrust authorities throughout the world have implemented leniency programs target at busting secret cartels. These programs offer immunity from prosecution to firms who blow the whistle on their co-cartel conspirators. These programs have been very successful: in the US, from 1993 to 2000, the total amount of fines for anti-competitive behavior increased by twentyfold.

Show how the leniency programs first implemented by the US Department of Justice and later replicated in many countries changes the rules of the game played between firms in a secret cartel.