At my request he showed me the method by which the safe was opened, and the ingenuity of the device caused me to wonder that he had found nothing of importance within its walls. I was, however, convinced that there was in the study some clue to the mystery of Carew's boyhood's home--although I could not help admitting to myself that it needed but faith in Mrs. Fortress's statement to arrive at a correct solution. But I required further evidence, and I resolved to search for it. "As you have placed yourself in my hands," I said, "you will not object to comply with two or three slight requests." "There is little you can ask," was his response, "that I am not ready to accede to." "Invite me to remain here as your guest for a few days." "I do." "Allow me to occupy this room alone until I retire to bed." "Willingly." "And promise me that you will not leave the house without first acquainting me of your intention." "I promise." A little while afterwards he left me to myself, saying that if I wished to see him I should find him with his wife. When he revealed to me the secret method by which the safe was worked, he did not close the panel; it remained open for my inspection, and I now made an examination of the interior without finding so much as a scrap of paper. This was as I expected; if Gabriel Carew's father left documents behind him, they must be searched for elsewhere. A careful study of the room led me to the conclusion that the massive writing-table was the most likely depository. The working of the safe was a process much too tedious for a man who wished for easy access to his papers; the writing-table offered the means of this, and I turned my attention to it. I do not wish to be prolix, and I therefore omit a description of the painfully careful examination of every point in this massive piece of furniture. Suffice it that, after at least an hour's search, my endeavours were rewarded. In one of the legs of the table on the inner side, quite undiscoverable without a light, I felt a depression just large enough to receive the ball of my thumb. I pressed hard, and although there was no immediate result, I fancied I detected a slight yielding, such as might occur when pressing upon a firm spring which had been disused for many years. I pressed harder, with all my strength, and I suddenly heard a sharp click. I found that this proceeded from the skirting of oak immediately above the leg I was manipulating. I had carefully examined the skirting all round the table without being able to discover any signs of a drawer. Now, however, one had started forward, and I had no difficulty in pulling it open. My heart beat more quickly as I drew from it a manuscript book and a few loose sheets of foolscap paper. The writing was large and plain; ink of such a quality had been used that the lapse of years had had but a slight effect upon it. In less than a minute I satisfied myself that the handwriting was that of Gabriel Carew's father.