I could not doubt that this was the Miss Stapleton of whom I had been told, since ladies of any sort must be few upon the moor, and I remembered that I had heard someone describe her as being a beauty. The woman who approached me was certainly that, and of a most uncommon type. There could not have been a greater contrast between brother and sister, for Stapleton was neutral tinted, with light hair and grey eyes, while she was darker than any brunette whom I have seen in England—slim, elegant, and tall. She had a proud, finely cut face, so regular that it might have seemed impassive were it not for the sensitive mouth and the beautiful dark, eager eyes. With her perfect figure and elegant dress she was, indeed, a strange apparition upon a lonely moorland path. Her eyes were on her brother as I turned, and then she quickened her pace towards me. I had raised my hat and was about to make some explanatory remark, when her own words turned all my thoughts into a new channel.
"Go back!" she said. "Go straight back to London, instantly."
I could only stare at her in stupid surprise. Her eyes blazed at me, and she tapped the ground impatiently with her foot.
"Why should I go back?" I asked.
"I cannot explain." She spoke in a low, eager voice, with a curious lisp in her utterance. "But for God's sake do what I ask you. Go back and never set foot upon the moor again."
"But I have only just come."
"Man, man!" she cried. "Can you not tell when a warning is for your own good? Go back to London! Start to-night! Get away from this place at all costs! Hush, my brother is coming! Not a word of what I have said. Would you mind getting that orchid for me among the mares-tails yonder? We are very rich in orchids on the moor, though, of course, you are rather late to see the beauties of the place."
Stapleton had abandoned the chase and came back to us breathing hard and flushed with his exertions.
"Halloa, Beryl!" said he, and it seemed to me that the tone of his greeting was not altogether a cordial one.
"Well, Jack, you are very hot."
"Yes, I was chasing a Cyclopides. He is very rare and seldom found in the late autumn. What a pity that I should have missed him!" He spoke unconcernedly, but his small light eyes glanced incessantly from the girl to me.
"You have introduced yourselves, I can see."
"Yes. I was telling Sir Henry that it was rather late for him to see the true beauties of the moor."
"Why, who do you think this is?"
"I imagine that it must be Sir Henry Baskerville."
"No, no," said I. "Only a humble commoner, but his friend. My name is Dr. Watson."
A flush of vexation passed over her expressive face. "We have been talking at cross purposes," said she.
"Why, you had not very much time for talk," her brother remarked with the same questioning eyes.
"I talked as if Dr. Watson were a resident instead of being merely a visitor," said she. "It cannot much matter to him whether it is early or late for the orchids. But you will come on, will you not, and see Merripit House?"
A short walk brought us to it, a bleak moorland house, once the farm of some grazier in the old prosperous days, but now put into repair and turned into a modern dwelling. An orchard surrounded it, but the trees, as is usual upon the moor, were stunted and nipped, and the effect of the whole place was mean and melancholy. We were admitted by a strange wizened, rusty-coated old man servant, who seemed in keeping with the house. Inside, however, there were large rooms furnished with an elegance in which I seemed to recognise the taste of the lady. As I looked from their windows at the interminable granite-flecked moor rolling unbroken to the farthest horizon I could not but marvel at what could have brought this highly educated man and this beautiful woman to live in such a place.
"Queer spot to choose, is it not?" said he as if in answer to my thought. "And yet we manage to make ourselves fairly happy, do we not, Beryl?"
"Quite happy," said she, but there was no ring of conviction in her words.
"I had a school," said Stapleton. "It was in the north country. The work to a man of my temperament was mechanical and uninteresting, but the privilege of living with youth, of helping to mould those young minds and of impressing them with one's own character and ideals, was very dear to me. However, the fates were against us. A serious epidemic broke out in the school and three of the boys died. It never recovered from the blow, and much of my capital was irretrievably swallowed up. And yet, if it were not for the loss of the charming companionship of the boys, I could rejoice over my own misfortune, for, with my strong tastes for botany and zoology, I find an unlimited field of work here, and my sister is as devoted to Nature as I am. All this, Dr. Watson, has been brought upon your head by your expression as you surveyed the moor out of our window."
"It certainly did cross my mind that it might be a little dull— less for you, perhaps, than for your sister."
"No, no, I am never dull," said she, quickly.
"We have books, we have our studies, and we have interesting neighbours. Dr. Mortimer is a most learned man in his own line. Poor Sir Charles was also an admirable companion. We knew him well, and miss him more than I can tell. Do you think that I should intrude if I were to call this afternoon and make the acquaintance of Sir Henry?"
"I am sure that he would be delighted."
"Then perhaps you would mention that I propose to do so. We may in our humble way do something to make things more easy for him until he becomes accustomed to his new surroundings. Will you come upstairs, Dr. Watson, and inspect my collection of Lepidoptera? I think it is the most complete one in the south-west of England. By the time that you have looked through them lunch will be almost ready."
But I was eager to get back to my charge. The melancholy of the moor, the death of the unfortunate pony, the weird sound which had been associated with the grim legend of the Baskervilles, all these things tinged my thoughts with sadness. Then on the top of these more or less vague impressions there had come the definite and distinct warning of Miss Stapleton, delivered with such intense earnestness that I could not doubt that some grave and deep reason lay behind it. I resisted all pressure to stay for lunch, and I set off at once upon my return journey, taking the grass-grown path by which we had come.
It seems, however, that there must have been some short cut for those who knew it, for before I had reached the road I was astounded to see Miss Stapleton sitting upon a rock by the side of the track. Her face was beautifully flushed with her exertions, and she held her hand to her side.
"I have run all the way in order to cut you off, Dr. Watson," said she. "I had not even time to put on my hat. I must not stop, or my brother may miss me. I wanted to say to you how sorry I am about the stupid mistake I made in thinking that you were Sir Henry. Please forget the words I said, which have no application whatever to you."
"But I can't forget them, Miss Stapleton," said I. "I am Sir Henry's friend, and his welfare is a very close concern of mine. Tell me why it was that you were so eager that Sir Henry should return to London."
"A woman's whim, Dr. Watson. When you know me better you will understand that I cannot always give reasons for what I say or do."
"No, no. I remember the thrill in your voice. I remember the look in your eyes. Please, please, be frank with me, Miss Stapleton, for ever since I have been here I have been conscious of shadows all round me. Life has become like that great Grimpen Mire, with little green patches everywhere into which one may sink and with no guide to point the track. Tell me then what it was that you meant, and I will promise to convey your warning to Sir Henry."
An expression of irresolution passed for an instant over her face, but her eyes had hardened again