Secrets of big dirty money

­What do the ex-Tunisian President Ben Ali, the former Libyan leader Muammar Gaddafi and his son, former Nigerian President Sani Abacha and some other well-known former presidents and monarchs have in common? MONEY! Big dirty money! Find out in a new documentary what sort of illicit schemes presidents, government ministers and monarchs use to launder money and how much have they been able to tuck away to their secret bank accounts.