Alex was a pioneer. Like all pioneers he had problems. He had more problems than most; when things start to go wrong in space they go wrong in a big way. One by one the perils of the void took their toll of his companions. Alex was alone, alone with a vision, the vision of a town, home.Only thoughts of home kept him alive. He remembered trees, houses, shops, churches, peoples...above all people. At last he reached earth...or perhaps it wasn't earth? Things had changed unbelievably. Perhaps he had changed. How long had he been away? How far had he drifted? There was a sinister possibility that this wasn't home at all. If the things that looked like people weren't people but aliens, what was he to do?Alex was a realist. He knew what space could do to a man's mind. He was disinclined to trust the evidence of his own senses. A mine that has had far more than it can take can produce from very peculiar perceptions...