But if on a day of cheerful sunshine the outlook is thus melancholy, it was vastly more so at ten o’clock on a certain dreary evening in mid-November. A watery moon, only partially visible through a damp mist, lit up pallidly the squalid, shuttered fronts of the houses. The air was cold and raw, and the pavements showed dark from a fine rain which had fallen some time earlier, but which had now ceased. Few were abroad, and no one whose business permitted it remained out of doors. Huckley Street, one of the narrowest and least inviting in the district, was, indeed, deserted save for a single figure. Though the higher and more ethical side of civilisation was not obtrusive, it was by no means absent. The figure represented Law and Order, in short, it was that of a policeman on his beat. Constable James Alcorn moved slowly forward, glancing mechanically but with practised eye over the shuttered windows of the shops and the closed doors of the offices and warehouses in his purview. He was not imaginative, the constable, or he would have rebelled even more strongly than he did against the weariness and monotony of his job. A dog’s life, this of night patrol in the City, he thought, as he stopped at a cross roads, and looked down each one in turn of the four dingy and deserted lanes which radiated from the intersection. How deadly depressing it all was! Nothing ever doing! Nothing to give a man a chance! In the daytime it was not so bad, when the streets were alive and fellow creatures were to be seen, if not spoken to, but at night when there was no one to watch, and nothing to be done but wait endlessly for the opportunity which never came, it was a thankless task. He was fed up! But though he didn’t know it, his chance was at hand. He had passed through Charles Street and had turned into Hatton Garden itself, when suddenly a door swung open a little way down the street, and a young man ran wildly out into the night. The door was directly under a street lamp, and Alcorn could see that the youth’s features were frozen into an expression of horror and alarm. He hovered for a moment irresolute, then, seeing the constable, made for him at a run. “Officer!” he shouted. “Come here quickly. There’s something wrong!” Alcorn, his depression gone, hurried to meet him. “What is it?” he queried. “What’s the matter?” “Murder, I’m afraid,” the other cried. “Up in the office. Come and see.” The door from which the young man had emerged stood open, and they hastened thither. It gave on a staircase upon which the electric light was turned on. The young man raced up and passed through a door on the first landing. Alcorn, following, found himself in an office containing three or four desks. A further door leading to an inner room stood open, and to this the young man pointed. “In there,” he directed; “in the Chief’s room.”