"It has been a case of considerable interest," he remarked, returning to his natural manner. "I fancy that this grey house on the right must be the lodge. I think that I will go in and have a word with Moran, and perhaps write a little note. Having done that, we may drive back to our luncheon. You may walk to the cab, and I shall be with you presently."

It was about ten minutes before we regained our cab and drove back into Ross, Holmes still carrying with him the stone which he had picked up in the wood.

"This may interest you, Lestrade," he remarked, holding it out. "The murder was done with it."

"I see no marks."

"There are none."

"How do you know, then?"

"The grass was growing under it. It had only lain there a few days. There was no sign of a place whence it had been taken. It corresponds with the injuries. There is no sign of any other weapon."

"And the murderer?"

"Is a tall man, left-handed, limps with the right leg, wears thick-soled shooting-boots and a grey cloak, smokes Indian cigars, uses a cigar-holder, and carries a blunt pen-knife in his pocket. There are several other indications, but these may be enough to aid us in our search."

Lestrade laughed. "I am afraid that I am still a sceptic," he said. "Theories are all very well, but we have to deal with a hard-headed British jury."

"Nous verrons," answered Holmes calmly. "You work your own method, and I shall work mine. I shall be busy this afternoon, and shall probably return to London by the evening train."

"And leave your case unfinished?"

"No, finished."

"But the mystery?"

"It is solved."

"Who was the criminal, then?"