Travel guide author Steve Waters, writing at the Lonely Planet website, has this to say:
The Black Nile offers a fascinating and harrowing look at a country that continually makes headlines for all the wrong reasons. Morrison does his best to explain the historical events, tribal intricacies, external pressures and internal tensions that haunt Sudan today. Ok, not every traveller can flash their press card and jump a UN chopper, but then they normally wouldn’t end up under the bed sheltering from a firefight between local militias either. Morrison’s trip through Sudan becomes a quest for understanding; an attempt to unearth the truth behind his experiences as he interviews rebel leaders and local headmen, academics and taxi drivers, archaeologists and tour guides, all the time cadging his way a little further downstream.