Modern slavery runs through the global economy in places most consumers never see, and filmmakers Brian Edwards and Kate Blewett, working from the book "Disposable People," go looking for it with hidden cameras. The trail runs from rug looms in Northwest India, where children work off family debts, to cocoa plantations in the Ivory Coast that supply chocolate manufacturers, to the Washington, D.C. home of a World Bank official accused of keeping a domestic servant in bondage. A separate thread follows the sex trafficking route from the port of Odesa through Istanbul to a parking lot in the Aksaray district, where women are sold outright. The filmmakers do not just film the trade, they intervene in it, buying captives in West Africa and helping free child laborers in India, putting themselves inside the transactions they are documenting. Produced by True Vision of London, the film links these separate, local stories into one argument about how corruption and willful blindness let slavery persist inside legitimate industries. It won a Peabody Award.