Fifteen years after the Khmer Rouge lost power, they still control hundreds of square miles of mountain and jungle along Cambodia's border with Thailand. It has been alleged that they have helped finance their civil war with the Cambodian government by allowing Thai timber firms to fell and export vast swathes of rain forest. BBC's Indochina correspondent Jonathan Miller uncovers the secret and lucrative trade and investigates accusations that Cambodian government officials are also in on the deal. And hidden cameras reveal another sinister trade - in tiger and leopard skins and bones. Plus, Emily Buchanan reports on a religious revolution in Brazil where thousands are abandoning Catholicism for a controversial evangelical group started by a former lottery salesman. The Universal Church of the Kingdom of God is a multi-million pound operation, which has attracted accusations of fraud and cash laundering.