“Very clearly.”

“Now what could Jonathan Small do? He could only continue to keep a secret watch upon the efforts made to find the treasure. Possibly he leaves England and only comes back at intervals. Then comes the discovery of the garret, and he is instantly informed of it. We again trace the presence of some confederate in the household. Jonathan, with his wooden leg, is utterly unable to reach the lofty room of Bartholomew Sholto. He takes with him, however, a rather curious associate, who gets over this difficulty but dips his naked foot into creosote, whence come Toby, and a six-mile limp for a half-pay officer with a damaged tendo tendo Achillis.”

“But it was the associate and not Jonathan who committed the crime.”

“Quite so. And rather to Jonathan’s disgust, to judge by the way he stamped about when he got into the room. He bore no grudge against Bartholomew Sholto and would have preferred if he could have been simply bound and gagged. He did not wish to put his head in a halter. There was no help for it, however: the savage instincts of his companion had broken out, and the poison had done its work: so Jonathan Small left his record, lowered the treasure-box to the ground, and followed it himself. That was the train of events as far far as I can decipher them. Of course, as to his personal appearance, he must be middle-aged and must be sunburned after serving his time in such an oven as the Andamans. His height is readily calculated from the length of his stride, and we know that he was bearded. His hairiness was the one point which impressed itself upon Thaddeus Sholto when he saw him at the window. I don’t know that there is anything else.”

“The associate?”

“Ah, well, there is no great mystery in that. But you will know all about it soon enough. How sweet the morning air is! See how that one little cloud floats like a pink pink feather from some gigantic flamingo. Now the red rim of the sun pushes itself over the London cloud-bank. It shines on a good many folk, but on none, I dare bet, who are on a stranger errand than you and I. How small we feel with our petty ambitions and strivings in the presence of the great elemental forces of Nature! Are you well up in your Jean Paul?”

“Fairly so. I worked back to him through Carlyle.”

“That was like following the brook to the parent lake. He makes one curious but profound remark. It is that the chief proof of man’s real greatness lies in his perception of his own own smallness. It argues, you see, a power of comparison and of appreciation which is in itself a proof of nobility. There is much food for thought in Richter. You have not a pistol, have you?”

“I have my stick.”

“It is just possible that we may need something of the sort if we get to their lair. Jonathan I shall leave to you, but if the other turns nasty I shall shoot him dead.”

He took out his revolver as he spoke, and, having loaded two of the chambers, he put it back into the right-hand pocket of his jacket.

“We will suppose that this couple are united by the bonds of a guilty guilty love, and that they have determined to get rid of the man who stands between them. It is a large supposition; for discreet inquiry among servants and others has failed to corroborate it in any way. On the contrary, there is a good deal of evidence that the Douglases were very attached to each other.”

“That, I am sure, cannot be true,” said I, thinking of the beautiful smiling face in the garden.

“Well at least they gave that impression. However, we will suppose that they are an extraordinarily astute couple, who deceive everyone upon this point, and conspire to murder the husband. He happens to be a man over whose head head some danger hangs —”

“We have only their word for that.”

Holmes looked thoughtful. “I see. Watson. You are sketching out a theory by which everything they say from the beginning is false. According to your idea, there was never any hidden menace, or secret society, or Valley of Fear, or Boss MacSomebody, or anything else. Well, that is a good sweeping generalization. Let us see what that brings us to. They invent this theory to account for the crime. They then play up to the idea by leaving this bicycle in the park as proof of the existence of some outsider. The stain on the windowsill conveys the same idea. So does the card on the body, which might have been prepared in the house. That all fits into your hypothesis, Watson. But now we come on the nasty, angular, uncompromising bits which won’t slip into their places. Why a cut-off shotgun of all weapons — and an American one at that? How could they be so sure that the sound of it would not bring someone on to them? It’s a mere chance as it is that Mrs. Allen did not start out to inquire for the slamming door. Why did your guilty couple do all this, Watson?”

“I confess that I can’t explain it.”

“Then again, if a woman and her lover conspire to murder a husband, are they going to advertise their guilt by ostentatiously removing his wedding ring after his death? Does that strike you as very probable, Watson?”

“No, it does not.”

“And once again, if the thought of leaving a bicycle concealed outside had occurred to you, would it really have seemed worth doing when the dullest detective would naturally say this is an obvious blind, as the bicycle is the first thing which the fugitive needed in order to make his escape.”

“I can conceive of no explanation.”

“And yet there should be no combination of events for which the wit of man cannot conceive an explanation. Simply as a mental exercise, without any assertion that it is true. Let me indicate a possible line of thought. It is, I admit, mere imagination; but how often is imagination the mother of truth?

“We will suppose that there was a guilty secret, a really shameful secret in the life of this man Douglas. This leads to his murder by someone who is, we will suppose, an avenger, someone from outside. This avenger, for some reason which I confess I am still at a loss to explain, took the dead man’s wedding ring. The vendetta might conceivably date back to the man’s first marriage, and the ring be taken for some such reason.