discovering an inspector of police upon the threshold, with a constable behind him. "Mr. Forrester, I believe?" he began; and as soon as I had answered in the affirmative, continued: "You must excuse my disturbing you, sir, at this early hour, but the reason is imperative. I should be glad if you would permit me the honour of five minutes' conversation with you, alone." "With pleasure," I answered, and immediately invited him to enter. Having shut the door behind him, I led the way to the studio, where I signed him to a chair, taking up a position myself on the hearthrug before him. The constable remained in the passage outside. "It is, as you say, rather an early hour for a call," I remarked, making a mental note as I spoke of the man's character as I read it in his large, honest eyes, well-shaped nose, and square, determined-looking chin. "What can I do for you?" "I believe you are in a position to furnish me with some important information," he replied. "To begin with, I might inform you that a diabolical murder was committed at the old curiosity shop at the corner of the next street, either late last night or during the early hours of this morning, most probably between midnight and one o'clock. It is altogether a most remarkable affair, and, from the evidence we have before us, though no cries were heard, the struggle must have been a desperate one. From the fact that the front door was still locked and bolted when we forced our way in, it is plain that the murderer must have effected his escape by the back. Indeed, a man _was_ seen entering the alley behind the house between one and two o'clock, though this circumstance excited no suspicion at the time. The witness who saw him reports that he came along on this side of the street, in the shadow, and, though he is not at all certain on this point, believes that he entered one of the houses hereabouts. That on your right is empty, and the doors and windows are securely fastened. He could not, therefore, have gone in there. That on the left is a boarding-house. I have called upon the landlady, who asserts most positively that her front door was not opened to any one after ten o'clock last night. She informs me, however, that a light was burning in your studio all night, and I see for myself that you have not been to bed. May I ask, therefore, if you saw anything of such a man, or whether you can furnish me with such particulars as will be likely to help us in our search for him."