“You see that,” said he, pointing to a big black box at the end of his bed. “I have never been a very rich man, Mr. Holmes - never made but one investment in my life, as Dr. Trevelyan would tell you. But I don’t believe in bankers. I would never trust a banker, Mr. Holmes. Between ourselves, what little I have is in that box, so you can understand what it means to me when unknown people force themselves into my rooms.”

Holmes looked at Blessington in his questioning way and shook his head.

“I cannot possibly advise you if you try to deceive me,” said he.

“But I have told you everything.”

Holmes turned on his heel with a gesture of disgust. “Good-night, Dr. Trevelyan,” said he.

“And no advice for me?” cried Blessington in a breaking voice.

“My advice to you, sir, is to speak the truth.”

A minute later we were in the street and walking for home. We had crossed Oxford Street and were halfway down Harley Street before I could get a word from my companion.

“Sorry to bring you out on such a fool’s errand, Watson,” he said at last. “It is an interesting case, too, at the bottom of it.”

“I can make little of it,” I confessed.

“Well, it is quite evident that there are two men - more, perhaps, but at least two - who are determined for some reason to get at this fellow Blessington. I have no doubt in my mind that both on the first and on the second occasion that young man penetrated to Blessington’s room, while his confederate, by an ingenious device, kept the doctor from interfering.”

“And the catalepsy?”

“A fraudulent imitation, Watson, though I should hardly dare to hint as much to our specialist. It is a very easy complaint to imitate. I have done it myself.”

“And then?”

“By the purest chance Blessington was out on each occasion. Their reason for choosing so unusual an hour for a consultation was obviously to insure that there should be no other patient in the waiting-room. It just happened, however, that this hour coincided with Blessington’s constitutional, which seems to show that they were not very well acquainted with his daily routine. Of course, if they had been merely after plunder they would at least have made some attempt to search for it. Besides, I can read in a man’s eye when it is his own skin that he is frightened for. It is inconceivable that this fellow could have made two such vindictive enemies as these appear to be without knowing of it. I hold it, therefore, to be certain that he does know who these men are, and that for reasons of his own he suppresses it. It is just possible that to-morrow may find him in a more communicative mood.”

“Is there not one alternative,” I suggested, “grotesquely improbable, no doubt, but still just conceivable? Might the whole story of the cataleptic Russian and his son be a concoction of Dr. Trevelyan’s, who has, for his own purposes, been in Blessington’s rooms?”

I saw in the gas-light that Holmes wore an amused smile at this brilliant departure of mine.

“My dear fellow,” said he, “it was one of the first solutions which occurred to me, but I was soon able to corroborate the doctor’s tale. This young man has left prints upon the stair-carpet which made it quite superfluous for me to ask to see those which he had made in the room. When I tell you that his shoes were square-toed instead of being pointed like Blessington’s, and were quite an inch and a third longer than the doctor’s, you will acknowledge that there can be no doubt as to his individuality. But we may sleep on it now, for I shall be surprised if we do not hear something further from Brook Street in the morning.”