"I have something to tell you, doctor," I said, "with reference to your new patient, which will interest you. Mabel Rutland was once engaged to be married to Edward Layton, and I believe there was a deep and profound attachment between them."

"You startle me," he said, "and have given me food for thought."

When he bade me good-night, it was with the determination to extract, if possible, from Mabel Rutland's parents some information respecting her mental condition which might be used to her benefit. For my part, I must confess to the hope, unreasonable as it may appear, that he may also be successful in obtaining some information which will assist me in the elucidation of the mystery upon which I am employed.

Cable message from Mr. Bainbridge, London, to Archibald Laing, U. S.

"Give me what particulars you can of Miss Mabel Rutland and her parents, and of her brothers and sisters, if she has any."

Cable message from Air. Archibald Laing, U. S to Mr. Bainbridge, London.

"Miss Mabel Rutland has no sisters. She has only a twin-brother, Eustace, to whom she was passionately attached and devoted. This brother and sister and their parents comprise the family. Mr. Rutland is of an implacable and relentless disposition, impatient of contradiction, and obstinate to a degree. These qualities were exercised in my favor some years ago, when I paid court to Miss Rutland, in the hope of making her my wife. Her father would have forced her into a marriage with me, but when I could no longer doubt that she loved Edward Layton, I preferred to retire rather than render her unhappy. By so doing, I think I won her esteem, and it is for her sake I wish Layton to be cleared of the charge brought against him. It is my belief that she still loves him, and she must be suffering terribly. If Layton is convicted, it will break her heart. I know very little of her brother Eustace. He was at Oxford when I was in London, and I met him only once or twice. Mrs. Rutland is a sweet lady, gentle-mannered, kindly-hearted, and I fear domineered over by her husband."

[III.]

I thank you for the information contained in your last cable. It gives me an insight into the generous motives which have prompted you to step forward on Edward Layton's behalf, and I am gratified in being associated with you in the cause. When a counsel finds himself en rapport with his client, it is generally of assistance to him he works with a better spirit.

Three days have passed since I wrote and despatched to you the second portion of the narrative of my proceedings and progress. I was waiting anxiously for something to occur--I could not exactly say what--which would serve as an absolute stepping-stone. Something has occurred which, although I have not yet discovered the key to it, will, I believe, prove to be of the utmost importance. You will understand later on what I mean by my use of the word "key;" and when I tell you that this which I call the stepping-stone is nothing more or less than the Nine of Hearts, you will give me credit for my prescience on the first production of that card in the Criminal Court. I felt convinced that it would be no insignificant factor in the elucidation of the Layton mystery.