Book excerpt: A level 2 Oxford Bookworms Library graded reader. This version includes an audio book: listen to the story as you read. Retold for Learners of English by Diane Mowat. 'I often walked along the shore, and one day I saw something in the sand. I went over to look at it more carefully . . . It was a footprint - the footprint of a man!' In 1659 Robinson Crusoe was shipwrecked on a small island off the coast of South America. After fifteen years alone, he suddenly learns that there is another person on the island. But will this man be a friend - or an enemy?