the little opening for the ventilator is."

  "How very absurd! I never noticed that before."

  "Very strange!" muttered Holmes, pulling at the rope. "There are

  one or two very singular points about this room. For example,

  what a fool a builder must be to open a ventilator into another

  room, when, with the same trouble, he might have communicated

  with the outside air!"

  "That is also quite modern," said the lady.

  "Done about the same time as the bell-rope?" remarked Holmes.

  "Yes, there were several little changes carried out about that

  time."

  "They seem to have been of a most interesting character--dummy

  bell-ropes, and ventilators which do not ventilate. With your

  permission, Miss Stoner, we shall now carry our researches into

  the inner apartment."

  Dr. Grimesby Roylott's chamber was larger than that of his

  step-daughter, but was as plainly furnished. A camp-bed, a small

  wooden shelf full of books, mostly of a technical character an

  armchair beside the bed, a plain wooden chair against the wall, a

  round table, and a large iron safe were the principal things

  which met the eye. Holmes walked slowly round and examined each

  and all of them with the keenest interest.

  "What's in here?" he asked, tapping the safe.

  "My stepfather's business papers."

  "Oh! you have seen inside, then?"

  "Only once, some years ago. I remember that it was full of

  papers."

  "There isn't a cat in it, for example?"

  "No. What a strange idea!"

  "Well, look at this!" He took up a small saucer of milk which

  stood on the top of it.

  "No; we don't keep a cat. But there is a cheetah and a baboon."

  "Ah, yes, of course! Well, a cheetah is just a big cat, and yet a

  saucer of milk does not go very far in satisfying its wants, I

  daresay. There is one point which I should wish to determine." He

  squatted down in front of the wooden chair and examined the seat

  of it with the greatest attention.

  "Thank you. That is quite settled," said he, rising and putting

  his lens in his pocket. "Hello! Here is something interesting!"

  The object which had caught his eye was a small dog lash hung on

  one corner of the bed. The lash, however, was curled upon itself

  and tied so as to make a loop of whipcord.

  "What do you make of that, Watson?"

  "It's a common enough lash. But I don't know why if should be

  tied."

  "That is not quite so common, is it? Ah, me! it's a wicked world,

  and when a clever man turns his brains to crime it is the worst

  of all. I think that I have seen enough now, Miss Stoner, and

  with your permission we shall walk out upon the lawn."

  I had never seen my friend's face so grim or his brow so dark as

  it was when we turned from the scene of this investigation. We

  had walked several times up and down the lawn, neither Miss

  Stoner nor myself liking to break in upon his thoughts before he

  roused himself from his reverie.

  "It is very essential, Miss Stoner," said he, "that you should

  absolutely follow my advice in every respect."

  "I shall most certainly do so."

  "The matter is too serious for any hesitation. Your life may

  depend upon your compliance."

  "I assure you that I am in your hands."

  "In the first place, both my friend and I must spend the night in

  your room."

  Both Miss Stoner and I gazed at him in astonishment.

  "Yes, it must be so. Let me explain. I believe that that is the

  village inn over there?"

  "Yes, that is the Crown."

  "Very good. Your windows would be visible from there?"

  "Certainly."

  "You must confine yourself to your room, on pretence of a

  headache, when your stepfather comes back. Then when you hear him

  retire for the night, you must open the shutters of your window,

  undo the hasp, put your lamp there as a signal to us, and then

  withdraw quietly with everything which you are likely to want

  into the room which you used to occupy. I have no doubt that, in

  spite of the repairs, you could manage there for one night."

  "Oh, yes, easily."

  "The rest you will leave in our hands."

  "But what will you do?"

  "We shall spend the night in your room, and we shall investigate

  the cause of this noise which has disturbed you."

  "I believe, Mr. Holmes, that you have already made up your mind,"

  said Miss Stoner, laying her hand upon my companion's sleeve.

  "Perhaps I have."

  "Then, for pity's sake, tell me what was the cause of my sister's

  death."

  "I should prefer to have clearer proofs before I speak."

  "You can at least tell me whether my own thought is correct, and

  if she died from some sudden fright."

  "No, I do not think so. I think that there was probably some more

  tangible cause. And now, Miss Stoner, we must leave you for if

  Dr. Roylott returned and saw us our journey would be in vain.

  Good-bye, and be brave, for if you will do what I have told you

  you may rest assured that we shall soon drive away the dangers

  that threaten you."

  Sherlock Holmes and I had no difficulty in engaging a bedroom and

  sitting-room at the Crown Inn. They were on the upper floor, and

  from our window we could command a view of the avenue gate, and

  of the inhabited wing of Stoke Moran Manor House. At dusk we saw

  Dr. Grimesby Roylott drive past, his huge form looming up beside

  the little figure of the lad who drove him. The boy had some

  slight difficulty in undoing the heavy iron gates, and we heard

  the hoarse roar of the doctor's voice and saw the fury with which

  he shook his clinched fists at him. The trap drove on, and a few

  minutes later we saw a sudden light spring up among the trees as

  the lamp was lit in one of the sitting-rooms.

  "Do you know, Watson," said Holmes as we sat together in the

  gathering darkness, "I have really some scruples as to taking you

  to-night. There is a distinct element of danger."

  "Can I be of assistance?"

  "Your presence might be invaluable."

  "Then I shall certainly come."

  "It is very kind of you."

  "You speak of danger. You have evidently seen more in these rooms

  than was visible to me."

  "No, but I fancy that I may have deduced a little more. I imagine

  that you saw all that I did."

  "I saw nothing remarkable save the bell-rope, and what purpose

  that could answer I confess is more than I can imagine."

  "You saw the ventilator, too?"

  "Yes, but I do not think that it is such a very unusual thing to

  have a small opening between two rooms. It was so small that a

  rat could hardly pass through."

  "I knew that we should find a ventilator before ever we came to

  Stoke Moran."

  "My dear Holmes!"

  "Oh, yes, I did. You remember in her statement she said that her

  sister could smell Dr. Roylott's cigar. Now, of course that

  suggested at once that there must be a communication between the

  two rooms. It could only be a small one, or
it would have been

  remarked upon at the coroner's inquiry. I deduced a ventilator."

  "But what harm can there be in that?"

  "Well, there is at least a curious coincidence of dates. A

  ventilator is made, a cord is hung, and a lady who sleeps in the

  bed dies. Does not that strike you?"

  "I cannot as yet see any connection."

  "Did you observe anything very peculiar about that bed?"

  "No."

  "It was clamped to the floor. Did you ever see a bed fastened

  like that before?"

  "I cannot say that I have."

  "The lady could not move her bed. It must always be in the same

  relative position to the ventilator and to the rope--or so we may

  call it, since it was clearly never meant for a bell-pull."

  "Holmes," I cried, "I seem to see dimly what you are hinting at.

  We are only just in time to prevent some subtle and horrible

  crime."

  "Subtle enough and horrible enough. When a doctor does go wrong

  he is the first of criminals. He has nerve and he has knowledge.

  Palmer and Pritchard were among the heads of their profession.

  This man strikes even deeper, but I think, Watson, that we shall

  be able to strike deeper still. But we shall have horrors enough

  before the night is over; for goodness' sake let us have a quiet

  pipe and turn our minds for a few hours to something more

  cheerful."

  About nine o'clock the light among the trees was extinguished,

  and all was dark in the direction of the Manor House. Two hours

  passed slowly away, and then, suddenly, just at the stroke of

  eleven, a single bright light shone out right in front of us.

  "That is our signal," said Holmes, springing to his feet; "it

  comes from the middle window."

  As we passed out he exchanged a few words with the landlord,

  explaining that we were going on a late visit to an acquaintance,

  and that it was possible that we might spend the night there. A

  moment later we were out on the dark road, a chill wind blowing

  in our faces, and one yellow light twinkling in front of us

  through the gloom to guide us on our sombre errand.

  There was little difficulty in entering the grounds, for

  unrepaired breaches gaped in the old park wall. Making our way

  among the trees, we reached the lawn, crossed it, and were about

  to enter through the window when out from a clump of laurel

  bushes there darted what seemed to be a hideous and distorted

  child, who threw itself upon the grass with writhing limbs and

  then ran swiftly across the lawn into the darkness.

  "My God!" I whispered; "did you see it?"

  Holmes was for the moment as startled as I. His hand closed like

  a vise upon my wrist in his agitation. Then he broke into a low

  laugh and put his lips to my ear.

  "It is a nice household," he murmured. "That is the baboon."

  I had forgotten the strange pets which the doctor affected. There

  was a cheetah, too; perhaps we might find it upon our shoulders

  at any moment. I confess that I felt easier in my mind when,

  after following Holmes's example and slipping off my shoes, I

  found myself inside the bedroom. My companion noiselessly closed

  the shutters, moved the lamp onto the table, and cast his eyes

  round the room. All was as we had seen it in the daytime. Then

  creeping up to me and making a trumpet of his hand, he whispered

  into my ear again so gently that it was all that I could do to

  distinguish the words:

  "The least sound would be fatal to our plans."

  I nodded to show that I had heard.

  "We must sit without light. He would see it through the

  ventilator."

  I nodded again.

  "Do not go asleep; your very life may depend upon it. Have your

  pistol ready in case we should need it. I will sit on the side of

  the bed, and you in that chair."

  I took out my revolver and laid it on the corner of the table.

  Holmes had brought up a long thin cane, and this he placed upon

  the bed beside him. By it he laid the box of matches and the

  stump of a candle. Then he turned down the lamp, and we were left

  in darkness.

  How shall I ever forget that dreadful vigil? I could not hear a

  sound, not even the drawing of a breath, and yet I knew that my

  companion sat open-eyed, within a few feet of me, in the same

  state of nervous tension in which I was myself. The shutters cut

  off the least ray of light, and we waited in absolute darkness.

  From outside came the occasional cry of a night-bird, and once at

  our very window a long drawn catlike whine, which told us that

  the cheetah was indeed at liberty. Far away we could hear the

  deep tones of the parish clock, which boomed out every quarter of

  an hour. How long they seemed, those quarters! Twelve struck, and

  one and two and three, and still we sat waiting silently for

  whatever might befall.

  Suddenly there was the momentary gleam of a light up in the

  direction of the ventilator, which vanished immediately, but was

  succeeded by a strong smell of burning oil and heated metal.

  Someone in the next room had lit a dark-lantern. I heard a gentle

  sound of movement, and then all was silent once more, though the

  smell grew stronger. For half an hour I sat with straining ears.

  Then suddenly another sound became audible--a very gentle,

  soothing sound, like that of a small jet of steam escaping

  continually from a kettle. The instant that we heard it, Holmes

  sprang from the bed, struck a match, and lashed furiously with

  his cane at the bell-pull.

  "You see it, Watson?" he yelled. "You see it?"

  But I saw nothing. At the moment when Holmes struck the light I

  heard a low, clear whistle, but the sudden glare flashing into my

  weary eyes made it impossible for me to tell what it was at which

  my friend lashed so savagely. I could, however, see that his face

  was deadly pale and filled with horror and loathing. He had

  ceased to strike and was gazing up at the ventilator when

  suddenly there broke from the silence of the night the most

  horrible cry to which I have ever listened. It swelled up louder

  and louder, a hoarse yell of pain and fear and anger all mingled

  in the one dreadful shriek. They say that away down in the

  village, and even in the distant parsonage, that cry raised the

  sleepers from their beds. It struck cold to our hearts, and I

  stood gazing at Holmes, and he at me, until the last echoes of it

  had died away into the silence from which it rose.

  "What can it mean?" I gasped.

  "It means that it is all over," Holmes answered. "And perhaps,

  after all, it is for the best. Take your pistol, and we will

  enter Dr. Roylott's room."

  With a grave face he lit the lamp and led the way down the

  corridor. Twice he struck at the chamber door without any reply

  from within. Then he turned the handle and entered, I at his

  heels, with the cocked pistol in my hand.

  It was a singular sight which met our eyes. On the table stood a

  dark-lantern with the shutter half open, throwing a brilliant

  beam
of light upon the iron safe, the door of which was ajar.

  Beside this table, on the wooden chair, sat Dr. Grimesby Roylott

  clad in a long gray dressing-gown, his bare ankles protruding

  beneath, and his feet thrust into red heelless Turkish slippers.

  Across his lap lay the short stock with the long lash which we

  had noticed during the day. His chin was cocked upward and his

  eyes were fixed in a dreadful, rigid stare at the corner of the

  ceiling. Round his brow he had a peculiar yellow band, with

  brownish speckles, which seemed to be bound tightly round his

  head. As we entered he made neither sound nor motion.

  "The band! the speckled band!" whispered Holmes.

  I took a step forward. In an instant his strange headgear began

  to move, and there reared itself from among his hair the squat

  diamond-shaped head and puffed neck of a loathsome serpent.

  "It is a swamp adder!" cried Holmes; "the deadliest snake in

  India. He has died within ten seconds of being bitten. Violence

  does, in truth, recoil upon the violent, and the schemer falls

  into the pit which he digs for another. Let us thrust this

  creature back into its den, and we can then remove Miss Stoner to

  some place of shelter and let the county police know what has

  happened."

  As he spoke he drew the dog-whip swiftly from the dead man's lap,

  and throwing the noose round the reptile's neck he drew it from

  its horrid perch and, carrying it at arm's length, threw it into

  the iron safe, which he closed upon it.

  Such are the true facts of the death of Dr. Grimesby Roylott, of

  Stoke Moran. It is not necessary that I should prolong a

  narrative which has already run to too great a length by telling

  how we broke the sad news to the terrified girl, how we conveyed

  her by the morning train to the care of her good aunt at Harrow,

  of how the slow process of official inquiry came to the

  conclusion that the doctor met his fate while indiscreetly

  playing with a dangerous pet. The little which I had yet to learn

  of the case was told me by Sherlock Holmes as we travelled back

  next day.

  "I had," said he, "come to an entirely erroneous conclusion which

  shows, my dear Watson, how dangerous it always is to reason from

  insufficient data. The presence of the gypsies, and the use of

  the word 'band,' which was used by the poor girl, no doubt to

  explain the appearance which she had caught a hurried glimpse of

  by the light of her match, were sufficient to put me upon an

  entirely wrong scent. I can only claim the merit that I instantly

  reconsidered my position when, however, it became clear to me

  that whatever danger threatened an occupant of the room could not

  come either from the window or the door. My attention was

  speedily drawn, as I have already remarked to you, to this

  ventilator, and to the bell-rope which hung down to the bed. The

  discovery that this was a dummy, and that the bed was clamped to

  the floor, instantly gave rise to the suspicion that the rope was

  there as a bridge for something passing through the hole and

  coming to the bed. The idea of a snake instantly occurred to me,

  and when I coupled it with my knowledge that the doctor was

  furnished with a supply of creatures from India, I felt that I

  was probably on the right track. The idea of using a form of

  poison which could not possibly be discovered by any chemical

  test was just such a one as would occur to a clever and ruthless

  man who had had an Eastern training. The rapidity with which such

  a poison would take effect would also, from his point of view, be

  an advantage. It would be a sharp-eyed coroner, indeed, who could

  distinguish the two little dark punctures which would show where

  the poison fangs had done their work. Then I thought of the

  whistle. Of course he must recall the snake before the morning