British-Zambian director on the challenges of making films in her home country

Film director Rungano Nyoni moved to Wales with her family at age 9, but her films are set in her home country of Zambia. Her latest, "On Becoming a Guinea Fowl" is set in Lusaka, the capital of Zambia, and is about how a family reacts to the death of a relative who turns out to not be a very good guy after all. The World's Carol Hills speaks to the director about the secrets families keep and what happens when they are revealed.