We had heard of his presence in the district and had once or twice caught sight of his tall figure upon the moorland paths. He made no advances to us, however, nor would we have dreamed of doing so to him, as it was well known that it was his love of seclusion which caused him to spend the greater part of the intervals between his journeys in a small bungalow buried in the lonely wood of Beauchamp Arriance. Here, amid his books and his maps, he lived an absolutely lonely life, attending to his own simple wants and paying little apparent heed to the affairs of his neighbours. It was a surprise to me, therefore, to hear him asking Holmes in an eager voice whether he had made any advance in his reconstruction of this mysterious episode. “The county police are utterly at fault,” said he, “but perhaps your wider experience has suggested some conceivable explanation. My only claim to being taken into your confidence is that during my many residences here I have come to know this family of Tregennis very well - indeed, upon my Cornish mother’s side I could call them cousins - and their strange fate has naturally been a great shock to me. I may tell you that I had got as far as Plymouth upon my way to Africa, but the news reached me this morning, and I came straight back again to help in the inquiry.”

Holmes raised his eyebrows.

“Did you lose your boat through it?”

“I will take the next.”

“Dear me! that is friendship indeed.”

“I tell you they were relatives.”

“Quite so - cousins of your mother. Was your baggage aboard the ship?”

“Some of it, but the main part at the hotel.”

“I see. But surely this event could not have found its way into the Plymouth morning papers.”

“No, sir; I had a telegram.”

“Might I ask from whom?”

A shadow passed over the gaunt face of the explorer.

“You are very inquisitive, Mr. Holmes.”

“It is my business.”

With an effort Dr. Sterndale recovered his ruffled composure.

“I have no objection to telling you,” he said. “It was Mr. Roundhay, the vicar, who sent me the telegram which recalled me.”

“Thank you,” said Holmes. “I may say in answer to your original question that I have not cleared my mind entirely on the subject of this case, but that I have every hope of reaching some conclusion. It would be premature to say more.”

“Perhaps you would not mind telling me if your suspicions point in any particular direction?”

“No, I can hardly answer that.”

“Then I have wasted my time and need not prolong my visit.” The famous doctor strode out of our cottage in considerable ill-humour, and within five minutes Holmes had followed him. I saw him no more until the evening, when he returned with a slow step and haggard face which assured me that he had made no great progress with his investigation. He glanced at a telegram which awaited him and threw it into the grate.

“From the Plymouth hotel, Watson,” he said. “I learned the name of it from the vicar, and I wired to make certain that Dr. Leon Sterndale’s account was true. It appears that he did indeed spend last night there, and that he has actually allowed some of his baggage to go on to Africa, while he returned to be present at this investigation. What do you make of that, Watson?”

“He is deeply interested.”

“Deeply interested - yes. There is a thread here which we have not yet grasped and which might lead us through the tangle. Cheer up, Watson, for I am very sure that our material has not yet all come to hand. When it does we may soon leave our difficulties behind us.”