CHAPTER II

_The Challenge of the Unknown_ Incredible! Impossible! I did not say it, though my thoughts were written on my face, no doubt. Derek said quietly, "Difficult to believe, Charlie? Yes! But it happens to be true. The girl I love is not of this world, but she lives nevertheless. I have seen her, talked with her. A slim little thing--beautiful...." He sat staring. "This is nothing supernatural, Charlie. Only the ignorant savages of our past called the unknown--the unusual--supernatural. We know better now." I said, "Th…