"Have you had another visitation from your friend?"

"The Jack o' Judgment?" asked the colonel. "Yes, we met him the other night. He's rather amusing. By the way, have you had complaints from anywhere else?"

Stafford shook his head.

"No, he seems to have specialised on you, colonel. You have certainly the monopoly of his attentions."

"What is going to happen supposing he makes an appearance when I happen to have a lethal weapon ready?" asked the colonel. "I have never killed a person in my life, and I hope the sad experience will not be mine. But from the police point of view, how do I stand suppose--there is an accident?"

Stafford shrugged his shoulders.

"That is his look out," he said. "If you are threatened, I dare say a jury of your fellow countrymen will decide that you acted in self-defence."

"He came the other night," the colonel said reminiscently, "when we were fixing up a particularly difficult--er--business negotiation."

"Bad luck!" said Stafford. "I suppose the mug was scared?"

"The what?" asked the puzzled colonel.

"The mug," said Stafford. "You may not have heard the expression. It means 'can'--'fool'--'dupe.'"

The colonel drew a long breath.

"You still bear malice, I see, Mr. King," he said sadly.

He entered the portals of Scotland Yard without so much as a tremor, pa.s.sed up the broad stairs and along the unlovely corridors, till he came to the double doors which marked the First Commissioner's private office. Stafford disappeared for a moment and presently returned with the news that the First Commissioner would not be able to see his visitor for half an hour. Stafford apologised but the colonel was affability itself and kept up a running conversation until a beckoning secretary notified them that the great man was disengaged.

It was King who ushered the colonel into his presence. Sir Stanley was writing at a big desk and looked up as the colonel entered.

"Sit down, colonel," he said, nodding his head to a chair on the opposite side of the desk. "You needn't wait, King. There are one or two things I want to speak to the colonel about."

When the door had closed behind the detective, Sir Stanley leaned back in his chair. Their eyes met, the grey and the faded blue, and for the s.p.a.ce of a few seconds they stared. Sir Stanley Belcom was the first to drop his eyes.

"I've sent for you, colonel," he said, "because I think you might give me a great deal of information, if you're willing."

"Command me," said the colonel grandly.

"It is on the matter of a murder which was committed in London a few months ago," said the commissioner quietly and for a moment Colonel Boundary did not speak.

"I presume you are referring to the 'Snow' Gregory murder?" he said at last.

"Exactly," nodded the commissioner. "We have had an inquiry from America as to the ident.i.ty of this young man. Now, you knew him better than anybody else in London, colonel. Can you tell me, was he an American?"

"Emphatically not," said the colonel with a little sigh, as though he were relieved at the turn the conversation was taking. "I came to know him through--er--circ.u.mstances, and exactly what they were I cannot for the moment remember. I had a lot to do with him. He did odd jobs for me."

"Was he well educated?" asked the commissioner.

"Yes, I should say he was," said the colonel slowly. "There was a story that he had been to Oxford, and that's very likely true. He spoke like a college man."

"Do you know if he had any relations in England?"

The commissioner eyed the other straightly and the colonel hesitated.

How much does this man know? he wondered, and decided that he could do no harm if he told all the truth.

"He had no relations in England," he said, "but he had a father who was abroad."

"Ah, now we're getting at some facts," said the commissioner and drew a slip of paper towards him. "What was the father's name?"

The colonel shook his head.

"That I can't tell you, sir," he said. "I should like to oblige you but I have no more idea of what his name was than the man in the moon. I believe he was in India, because letters from India used to come to Gregory."

"Was Gregory his name?"

"His Christian name, I think," said the colonel after a moment's thought. "He went wrong at college and was sent down. Then he went to Paris and started to study art, and he got in trouble there, too. That's as much as he ever told me."

"He had no brothers?" asked the commissioner.

"None," said the colonel emphatically. "I am certain of that, because he once thanked G.o.d that he was the only child."

"I see," the commissioner nodded; "you have formed no theory as to why he met his death or how?"

"No theory at all," said the colonel, but corrected himself. "Of course, I've had ideas and opinions, but none of them has ever worked out. So far as I know, he had no enemies, although he was a quick-tempered chap, especially when he was recovering from a dose of 'coco,' and would quarrel with his own grandmother."

"You've no idea why he was in London? Apparently he did not live here."

The colonel shrugged his ma.s.sive shoulders.

"No, I couldn't tell you anything about that, sir," he said.

"He was not an American?" asked the commissioner again.

"I could swear to that," answered the colonel.

There was a pause and he waited.

"There's another matter." The commissioner spoke slowly. "I understand that you are being bothered by a mysterious individual who calls himself the Knave of Judgment."

"Jack o' Judgment," corrected the colonel with a contemptuous smile.

"Those sort of monkey tricks don't bother me, I can a.s.sure you."

"I have my theories about the Jack o' Judgment," said the commissioner.

"I have been looking up the circ.u.mstances of the murder, and I seem to remember that on the body was found a playing card."

"That's right," said the colonel, who had remembered the fact himself many times, "the Jack of Clubs."

"Do you know what that Jack of Clubs signified?" asked the commissioner, but the colonel could honestly say that he did not. Its presence on the body had frequently puzzled him and he had never found a solution.

"There is a certain type of ruffian to be found, particularly in Paris, who affects this sort of theatrical trade-mark--did you know that?"