5/8. Niger. Nearly eight per cent of the population of Niger in West Africa are believed to be slaves. For generations whole families have been at the mercy of their masters, working round the clock for, at best, food and accommodation. Gerry Northam travels to Niger to discover why, despite a law making slavery illegal, it is proving difficult to stamp out. He meets former slaves who, at great risk, have escaped from their masters, and hears from a government minister why the new law has failed to cut the number of slaves. He also talks to one slave owner who caused a controversy by freeing his ten slaves. Producer Emma Rippon Repeated on Monday at 8.30pm