Rwanda

The actress embarks on the last leg of her epic river journey, flying to Juba in southern Sudan where the fragile peace process has enabled a re-emergence of the country's beauty pageants. She then heads to the Murchison Falls in Uganda and encounters some of Africa's wildlife - including hippos, rhinos and an unusual bird called a shoebill. Finally, Joanna meets explorer Cam McLeay who takes her to the source of the Nile, high up in the Rwandan mountains. Last in the series