As she ran into the room she saw her employer, the lady, leaning over the baby and apparently biting his neck. There was a small wound in the neck from which a stream of blood had escaped. The nurse was so horrified that she wished to call the husband, but the lady implored her not to do so and actually gave her five pounds as a price for her silence. No explanation was ever given, and for the moment the matter was passed over.

It left, however, a terrible impression upon the nurse's mind, and from that time she began to watch her mistress closely and to keep a closer guard upon the baby, whom she tenderly loved. It seemed to her that even as she watched the mother, so the mother watched her, and that every time she was compelled to leave the baby alone the mother was waiting to get at it. Day and night the nurse covered the child, and day and night the silent, watchful mother seemed to be lying in wait as a wolf waits for a lamb. It must read most incredible to you, and yet I beg you to take it seriously, for a child's life and a man's sanity may depend upon it.

At last there came one dreadful day when the facts could no longer be concealed from the husband. The nurse's nerve had given way; she could stand the strain no longer, and she made a clean breast of it all to the man. To him it seemed as wild a tale as it may now seem to you. He knew his wife to be a loving wife, and, save for the assaults upon her stepson, a loving mother. Why, then, should she wound her own dear little baby? He told the nurse that she was dreaming, that her suspicions were those of a lunatic, and that such libels upon her mistress were not to be tolerated. While they were talking a sudden cry of pain was heard. Nurse and master rushed together to the nursery. Imagine his feelings, Mr. Holmes, as he saw his wife rise from a kneeling position beside the cot and saw blood upon the child's exposed neck and upon the sheet. With a cry of horror, he turned his wife's face to the light and saw blood all round her lips. It was she—she beyond all question—who had drunk the poor baby's blood.

So the matter stands. She is now confined to her room. There has been no explanation. The husband is half demented. He knows, and I know, little of vampirism beyond the name. We had thought it was some wild tale of foreign parts. And yet here in the very heart of the English Sussex—well, all this can be discussed with you in the morning. Will you see me? Will you use your great powers in aiding a distracted man? If so, kindly wire to Ferguson, Cheeseman's, Lamberley, and I will be at your rooms by ten o'clock.

Yours faithfully,
Robert Ferguson.

P. S. I believe your friend Watson played Rugby for Blackheath when I was three-quarter for Richmond. It is the only personal introduction which I can give.

“Of course I remembered him,” said I as I laid down the letter. “Big Bob Ferguson, the finest three-quarter Richmond ever had. He was always a good-natured chap. It's like him to be so concerned over a friend's case.”

Holmes looked at me thoughtfully and shook his head.

“I never get your limits, Watson,” said he.