"I have been calling on Mortimer, and he pointed you out to me from the window of his surgery as you passed. As our road lay the same way I thought that I would overtake you and introduce myself. I trust that Sir Henry is none the worse for his journey?"
"He is very well, thank you."
"We were all rather afraid that after the sad death of Sir Charles the new baronet might refuse to live here. It is asking much of a wealthy man to come down and bury himself in a place of this kind, but I need not tell you that it means a very great deal to the country-side. Sir Henry has, I suppose, no superstitious fears in the matter?"
"I do not think that it is likely."
"Of course you know the legend of the fiend dog which haunts the family?"
"I have heard it."
"It is extraordinary how credulous the peasants are about here! Any number of them are ready to swear that they have seen such a creature upon the moor." He spoke with a smile, but I seemed to read in his eyes that he took the matter more seriously. "The story took a great hold upon the imagination of Sir Charles, and I have no doubt that it led to his tragic end."
"But how?"
"His nerves were so worked up that the appearance of any dog might have had a fatal effect upon his diseased heart. I fancy that he really did see something of the kind upon that last night in the Yew Alley. I feared that some disaster might occur, for I was very fond of the old man, and I knew that his heart was weak."
"How did you know that?"
"My friend Mortimer told me."
"You think, then, that some dog pursued Sir Charles, and that he died of fright in consequence?"
"Have you any better explanation?"
"I have not come to any conclusion."
"Has Mr. Sherlock Holmes?"
The words took away my breath for an instant, but a glance at the placid face and steadfast eyes of my companion showed that no surprise was intended.
"It is useless for us to pretend that we do not know you, Dr. Watson," said he. "The records of your detective have reached us here, and you could not celebrate him without being known yourself. When Mortimer told me your name he could not deny your identity. If you are here, then it follows that Mr. Sherlock Holmes is interesting himself in the matter, and I am naturally curious to know what view he may take."
"I am afraid that I cannot answer that question."
"May I ask if he is going to honour us with a visit himself?"
"He cannot leave town at present. He has other cases which engage his attention."
"What a pity! He might throw some light on that which is so dark to us. But as to your own researches, if there is any possible way in which I can be of service to you I trust that you will command me. If I had any indication of the nature of your suspicions or how you propose to investigate the case, I might perhaps even now give you some aid or advice."
"I assure you that I am simply here upon a visit to my friend, Sir Henry, and that I need no help of any kind."
"Excellent!" said Stapleton. "You are perfectly right to be wary and discreet. I am justly reproved for what I feel was an unjustifiable intrusion, and I promise you that I will not mention the matter again."
We had come to a point where a narrow grassy path struck off from the road and wound away across the moor. A steep, boulder-sprinkled hill lay upon the right which had in bygone days been cut into a granite quarry. The face which was turned towards us formed a dark cliff, with ferns and brambles growing in its niches. From over a distant rise there floated a grey plume of smoke.
"A moderate walk along this moor-path brings us to Merripit House," said he. "Perhaps you will spare an hour that I may have the pleasure of introducing you to my sister."
My first thought was that I should be by Sir Henry's side. But then I remembered the pile of papers and bills with which his study table was littered. It was certain that I could not help with those. And Holmes had expressly said that I should study the neighbours upon the moor. I accepted Stapleton's invitation, and we turned together down the path.
"It is a wonderful place, the moor," said he, looking round over the undulating downs, long green rollers, with crests of jagged granite foaming up into fantastic surges. "You never tire of the moor. You cannot think the wonderful secrets which it contains. It is so vast, and so barren, and so mysterious."
"You know it well, then?"
"I have only been here two years. The residents would call me a new comer. We came shortly after Sir Charles settled. But my tastes led me to explore every part of the country round, and I should think that there are few men who know it better than I do."
"Is it hard to know?"
"Very hard. You see, for example, this great plain to the north here with the queer hills breaking out of it. Do you observe anything remarkable about that?"
"It would be a rare place for a gallop."
"You would naturally think so and the thought has cost several their lives before now. You notice those bright green spots scattered thickly over it?"
"Yes, they seem more fertile than the rest."
Stapleton laughed.
"That is the great Grimpen Mire," said he. "A false step yonder means death to man or beast. Only yesterday I saw one of the moor ponies wander into it. He never came out. I saw his head for quite a long time craning out of the bog-hole, but it sucked him down at last. Even in dry seasons it is a danger to cross it, but after these autumn rains it is an awful place. And yet I can find my way to the very heart of it and return alive. By George, there is another of those miserable ponies!"
Something brown was rolling and tossing among the green sedges. Then a long, agonised, writhing neck shot upward and a dreadful cry echoed over the moor. It turned me cold with horror, but my companion's nerves seemed to be stronger than mine.
"It's gone!" said he. "The mire has him. Two in two days, and many more, perhaps, for they get in the way of going there in the dry weather, and never know the difference until the mire has them in its clutches. It's a bad place, the great Grimpen Mire."
"And you say you can penetrate it?"
"Yes, there are one or two paths which a very active man can take. I have found them out."
"But why should you wish to go into so horrible a place?"
"Well, you see the hills beyond? They are really islands cut off on all sides by the impassable mire, which has crawled round them in the course of years. That is where the rare plants and the butterflies are, if you have the wit to reach them."
"I shall try my luck some day."
He looked at me with a surprised face.
"For God's sake put such an idea out of your mind," said he.
"Your blood would be upon my head. I assure you that there would not be the least chance of your coming back alive. It is only by remembering certain complex landmarks that I am able to do it."
"Halloa!" I cried. "What is that?"
A long, low moan, indescribably sad, swept over the moor. It filled the whole air, and yet it was impossible to say whence it came. From a dull murmur it swelled into a deep roar, and then sank back into a melancholy, throbbing murmur once again. Stapleton looked at me with a curious expression in his face.
"Queer place, the moor!" said he.
"But what is it?"
"The peasants say it is the Hound of the Baskervilles calling for its prey. I've heard it once or twice before, but never