"Oh, yes, we had heard before, and that's where our mystery of the sealed door, upon which you stumbled to-night, has its origin. Pass me that desk, if you please. Here I have my father's letters, and you are the first man except Mr. Perceval who has seen them." "Who is Mr. Perceval, may I ask?" "He was my father's confidential clerk, and he has continued to be the friend and adviser of my mother and then of myself. I don't know what we should have done without Perceval. He saw the letters, but no one else. This is the first one, which came on the very day when my father fled, seven years ago. Read it to yourself." This is the letter which I read: "MY EVER DEAREST WIFE,-- "Since Sir William told me how weak your heart is, and how harmful any shock might be, I have never talked about my business affairs to you. The time has come when at all risks I can no longer refrain from telling you that things have been going badly with me. This will cause me to leave you for a little time, but it is with the absolute assurance that we shall see each other very soon. On this you can thoroughly rely. Our parting is only for a very short time, my own darling, so don't let it fret you, and above all don't let it impair your health, for that is what I want above all things to avoid. "Now, I have a request to make, and I implore you by all that binds us together to fulfil it exactly as I tell you. There are some things which I do not wish to be seen by any one in my dark room--the room which I use for photographic purposes at the end of the garden passage. To prevent any painful thoughts, I may assure you once for all, dear, that it is nothing of which I need be ashamed. But still I do not wish you or Felix to enter that room. It is locked, and I implore you when you receive this to at once place a seal over the lock, and leave it so. Do not sell or let the house, for in either case my secret will be discovered. As long as you or Felix are in the house, I know that you will comply with my wishes. When Felix is twenty-one he may enter the room--not before. "And now, good-bye, my own best of wives. During our short separation you can consult Mr. Perceval on any matters which may arise. He has my complete confidence. I hate to leave Felix and you--even for a time--but there is really no choice. "Ever and always your loving husband, "STANISLAUS STANNIFORD. "_June 4th, 1887._" * * * * * "These are very private family matters for me to inflict upon you," said my companion apologetically. "You must look upon it as done in your professional capacity. I have wanted to speak about it for years." "I am honoured by your confidence," I answered, "and exceedingly interested by the facts."