In the 1930s one of the great novelists of the century, Graham Greene, went on what he called a Journey Without Maps.
It was a trek on foot along over 550km of tracks and paths through Liberia and Sierra Leone.
Now, journalist Tim Butcher has followed in his footsteps.
He has been a war correspondent in the area, but this time he was on the track of the intriguing Mr Greene.
First broadcast 1 September 2010