"I had a friend," he said, "in fact, I had two friends. One was young--about your age," nodding to Sanford. "The other was older. He was not so clever nor so attractive nor so brilliant nor so jolly as the younger, but he had a characteristic--perhaps his only one--for he was a very ordinary man. He had an iron will. His determination was as unbreakable as anything human could be. And he was devoted to his friend, who, somehow, loved him. I don't know why, because he had so many other admirers--but he stuck to his friend--Joan. They called the two Darby and Joan. Their real names were not unlike those, and it was rather funny. Darby used to talk as you were talking, sir," he nodded again to Sanford, "and he was sure, cock sure, that what he said was right. He would tell what things were possible and what were not, and prove what he said very nicely. Joan wasn't clever, but he knew that it does no good to call a thing impossible. He knew, in fact, that nothing is more possible than the most impossible things." The man coughed and cleared his throat and waited a moment as if to see whether he were intruding. No one spoke, so he went on. "One day Darby rushed into Joan's study and told him of a haunted mill he'd discovered. It was one of the old mills where the farmers used to bring their sacks before the big concerns in the West swallowed all the little trades. It was dusty and cobwebbed and broken down and unused and haunted. And there was a farmhouse directly across the road and a house on either side of it not a hundred feet away. "'Was it always haunted?' asked Joan. 'No,' said Darby, 'only once a year.' On Christmas eve every year for nineteen years there had appeared, late at night, a little light in one of the windows; and that side of the house had an odd look, somehow it seemed to look fresher and newer, and at one o'clock or so a horrible piercing shriek would ring out from the mill, and then a kind of crashing fall, and then all was still, and the light would disappear. "'Had nobody investigated?' Oh, yes. The first year it was noticed was when houses were built up around it. It used to stand away from everything else, and the miller and his family lived there. Then, long after they were dead, people moved out there and heard the noises and saw the light. They thought of tramps and escaped criminals and everything one suggests till it had occurred too repeatedly for that, and then a young farmer went over one Christmas eve, not telling any one, and they found him roaming about the mill, a hopeless wreck the next day; he had gone quite mad.