Isobel Yeung goes undercover with Chinese triads that are laundering money by funding fentanyl production in Mexico and distributing the drug in the US, contributing to the nation's opioid epidemic.

Isobel Yeung and a team of BBC investigative journalists navigate gun battles, combat raids and secretive meetings as they conduct an investigation deep inside the occupied West Bank.

Journalist Isobel Yeung investigates one of the world's most iconic brands and its owner Mattel. The toy maker has profited from global 'Barbiemania' through giving Barbie a makeover as a 21st ...