I couldn't sleep all night long. I didn't know whose footprint it was. How had they arrived on the beach? Had another sailor been shipwrecked ? Was it a cannibal? Or a monster! My home was safe with its high walls, but I was still worried that someone could have followed me there. Life was very strange: for years I'd felt unhappy because I was alone, but now I was really worried that someone else on the island and that they were waiting for me in the forest.