Fentanyl is the main source of drug overdoses in the United States, supplied by the infamous Mexican Sinaloa cartel. The drug is making a fortune for the cartel, we go inside to see the luxurious lifestyle.

It's been called the biggest art theft in history – thousands of statues stolen from temples across Cambodia and sold to private collectors and international museums, including here in Australia. Now a team of art sleuths, on behalf of the Cambodian Government, are on a mission to bring home the country's cultural heritage.

In this episode of Foreign Correspondent, the inside story of how Cambodia's stolen antiquities are being tracked and returned in a global treasure hunt. South-East Asia correspondent Mazoe Ford travels with the restitution team as they journey across the country and over borders to identify, trace and reclaim Cambodia's missing treasures.