AS Malcolm Sage and Inspector Carfon crossed the lawn from the laboratory, Sir Jasper Chambers was seen coming down the drive towards them.

"There's Sir Jasper," cried the inspector.

When they reached the point where the lawn joined the drive they paused, waiting for Sir Jasper to approach. He walked with long, loose strides, his head thrust forward, his mind evidently absorbed and far away from where he was. His coat flapped behind him, and at each step his trousers jerked upwards, displaying several inches of grey worsted sock.

"Good afternoon, Sir Jasper," said Inspector Carfon, stepping forward and lifting his hat.

Sir Jasper stopped dead, with the air of one who has suddenly been brought to a realisation of his whereabouts. For a moment he stared blankly, then apparently recognition came to his aid.

"Good afternoon, inspector," he responded, lifting his black felt hat with a graceful motion that seemed strangely out-of-keeping with his grotesque appearance. In the salutation he managed to include Malcolm Sage, who acknowledged it with his customary jerky nod.

"We have just been looking at the laboratory," said the inspector.

"Ah!" Sir Jasper nodded his head several times. "The laboratory!"

"Will you oblige me with your pouch, Carfon," said Malcolm Sage, drawing his pipe from his pocket. "I've lost mine."

Inspector Carfon thrust his hand into his left-hand pocket, then began to go hurriedly through his other pockets with the air of a man who has lost something.

"I had it a quarter of an hour ago," he said. "I must have dropped it in the——"

"Allow me, sir," said Sir Jasper, extending to Malcolm Sage his own pouch, which he had extracted from his tail-pocket, whilst the inspector was still engaged in his search. Malcolm Sage took it and with a nod proceeded to fill his pipe.

"Looks like Craven Mixture," he remarked without looking up from the pipe which he was cramming from Sir Jasper's pouch.

Malcolm Sage was an epicure in tobacco.

"No; it's Ormonde Mixture," was the reply. "I always smoke it. It is singularly mellow," he added, "singularly mellow." He continued to look straight in front of him, whilst the inspector appeared anxious to get on to the house.

Having completed his task, Malcolm Sage folded the tobacco-pouch and handed it back to Sir Jasper.

"Thank you," he said, and proceeded to light his pipe.

Apparently seeing nothing to detain him further, Sir Jasper lifted his hat, bowed and passed on.

"Regular old cure, isn't he?" remarked the inspector as they watched the ungainly figure disappear round the bend of the drive.

"A great man, Carfon," murmured Malcolm Sage, "a very great man," and he turned and walked towards the house.

The front door of "The Hollows" was opened by the butler, a gentle-faced old man, in appearance rather like a mid-Victorian lawyer. At the sight of the inspector, a troubled look came into his eyes.

"I want to have a few words with you," said Malcolm Sage quietly.

The old man led the way to the library. Throwing open the door for them to pass in, he followed and closed it behind him. Malcolm Sage seated himself at the table and Inspector Carfon also dropped into a chair. The butler stood, his hands half-closed before him, the palm of one resting upon the knuckles of the other. His whole attitude was half-nervous, half-fearful, and wholly deprecating.

"I'm afraid this has been a great shock to you," said Malcolm Sage.

Inspector Carfon glanced across at him. There was an unaccustomed note of gentleness in his tone.

"It has indeed, sir," said the butler, and two tears gathered upon his lower lids, hung pendulous for a second, then raced one another down either side of his nose. It was the first sympathetic word the old man had heard since the police had arrived, insatiable for facts.

"Sit down," said Malcolm Sage, without looking up, "I shall not keep you many minutes." His tone was that one might adopt to a child.

The old man obeyed, seating himself upon the edge of the chair, one hand still placed upon the other.

"You mustn't think because the police ask a lot of questions that they mean to be unkind," said Malcolm Sage.

"I—I believe they think I did it," the old man quavered, "and—and
I'd have done anything——"

His voice broke, the tears coursing down his colourless cheeks.

"I want you to try to help me find out who did kill your master," continued Malcolm Sage, in the same tone, "and you can do that by answering my questions."

There was no restless movement of fingers now. The hard, keen look had left his eyes, and his whole attention seemed to be concentrated upon soothing the old man before him.

With an obvious effort the butler strove to control himself.

"Did the professor ever have visitors at his laboratory?"

"Only Sir Jasper, sir. He was——"

"Just answer my questions," said Malcolm Sage gently. "He told you,
I think, never on any account to disturb him?"

"Yes, sir."

"Did you ever do so?"

"Only once, sir."

"That was?"

"When Mrs. Graham, that's the housekeeper, sir, set fire to the curtains of her room. I was afraid for the house, sir, and I ran down and knocked at the laboratory door."

"Did the professor open it?"

"No, sir."

"Perhaps he did not hear you?"

"Yes, he did, sir. I knocked and kicked for a long time, then I ran back to the house and found the fire had been put out."

"Did Professor McMurray ever refer to the matter?"

"He was very angry when I next saw him, sir, three days later."

"What did he say?"

"That neither fire nor murder was an excuse for interrupting him, and if I did it again I would have to——"

"Quite so," interrupted Malcolm Sage, desirous of saving the old servitor the humiliation of explaining that he had been threatened with dismissal.

"So you are confident in your own mind that no amount of knocking at the door would have caused your master to open it?"

"Quite certain, sir," the butler said with deep conviction. "If he had heard me murdering Mrs. Graham he wouldn't have come out," he added gravely. "He used to say that man is for the moment; but research is for all time. He was a very wonderful man, sir," he added earnestly.

"So that to get into the laboratory someone must have had a duplicate key?"

"No, sir, the professor always bolted the door on the inside."

"Then he must have opened it himself?"

"He wouldn't, sir. I'm sure he wouldn't."

"But how did Sir Jasper get in?"

"He was expected, sir, and when he went to the laboratory, the master always ordered extra food. He was very absent-minded, sir; but he always remembered that. He was very considerate, sir, too. He never forgot my birthday," and he broke down completely, his frail body shaken by sobs.

Rising, Malcolm Sage placed his hand upon the old man's shoulder. As if conscious of the unspoken message of sympathy inspired by the touch, the butler clasped the hand in both his own.

Inspector Carfon looked surprised.

"He was so kind, sir, so kind and thoughtful," he quavered. "I don't know what I shall do without him." There was in his voice something of the querulous appeal of a little child.

"Were letters ever taken to the laboratory?" enquired Malcolm Sage, walking over to the window and gazing out.

"Never, sir," was the reply. "Everything was kept until the professor returned to the house, even telegrams."

"Then he was absolutely cut off?" said Malcolm Sage, returning to his seat.

"That was what he used to say, sir, that he wanted to feel cut off from everybody and everything."

"You have seen the body?"

"Yes, sir."

"Did you notice anything remarkable about it?"

"He was more like he was some thirty years ago, sir."

"Rejuvenated in fact."

"I beg pardon, sir?"

"He seemed to have become suddenly a much younger man?" explained
Malcolm Sage.

"Yes, sir. I've been with him over thirty years, and he looked very much as he did then, except, of course, that his hair remained grey."

"Apart from the food not being taken in, you noticed nothing else that struck you as strange?" queried Malcolm Sage.

The old man puckered up his eyebrows, as if genuinely anxious to remember something that would please the man who had shown him so much sympathy.

"I can't think of anything, sir," he said at length, apologetically, "only the marmalade, and that, of course, wouldn't——"

"The marmalade?" Malcolm Sage turned quickly.

"It was nothing, sir," said the old man. "Perhaps I oughtn't to have mentioned it; but the morning before we found him, the master had not eaten any marmalade, and him so fond of it. I was rather worried, and I asked Mrs. Graham if it was a new brand, thinking perhaps he didn't like it; but I found it was the same he always had."

For fully a minute Malcolm Sage was silent, gazing straight before him.

"He never smoked?" he asked at length.

"Never, sir, not during the whole thirty years I've been with him."

"Who cleaned the laboratory? It did not look as if it had been unswept for a week."

"No, indeed, sir," was the reply, "the professor was very particular. He always swept it up himself each morning. It was cleaned by one of the servants once a month."

"You're sure about the sweeping-up?" Malcolm Sage enquired with a keen glance that with him always meant an important point.

"Quite certain, sir."

"That, I think, will be all."

"Thank you, sir," said the butler, rising. "Thank you for being so kind, and—and understanding, sir," and he walked a little unsteadily from the room.

"I was afraid you wouldn't get anything out of him, Mr. Sage," said
Inspector Carfon, with just a suspicion of relief in his voice.

"No," remarked Malcolm Sage quietly, "nothing new; but an important corroboration of the doctor's evidence."

"What was that?"

"That it was the murderer and not Professor McMurray who ate
Wednesday's breakfast, luncheon and dinner."

"Good Lord!" The inspector's jaw dropped in his astonishment.

"I suspect that for some reason or other he returned to the laboratory; that accounts for the rough marks upon the door-fastenings as if someone had first torn them off and then sought to replace them. After his second visit the murderer evidently stayed too long, and was afraid of being seen leaving the laboratory. He therefore remained until the following night, eating the professor's meals. Incidentally he knew all about his habits."

"Well, I'm blowed if he isn't a cool un!" gasped the inspector.

Malcolm Sage rose with the air of one who has concluded the business on hand.

"Can I run you back to town, Carfon?" he asked, as he walked towards the door.

"No, thank you," said the inspector. "I must go over to Strinton and see Brewitt. He's following up a clue he's got. Some tramp who was seen hanging about here for a couple of days just before the murder," he added.

"Unless he is tall and powerful, left-handed, with something more than a layman's knowledge of surgery, you had better not trouble about him," said Malcolm Sage quietly. "You might also note that the murderer belongs to the upper, or middle class, has an iron nerve, and is strongly humanitarian."

For a moment Inspector Carfon stared at Malcolm Sage with lengthened jaw. Then suddenly he laughed, a laugh of obvious relief.

"At first I thought you were serious, Mr. Sage," he said, "till I saw what you were up to. It's just like the story-book detectives," and he laughed again, this time more convincingly.

Malcolm Sage shrugged his shoulders. "Let me have a description of the man when you get him," he said, "and some of the tobacco he smokes. Try him with marmalade, Carfon, and plenty of it. By the way, you make a great mistake in not reading The Present Century," he added. "It can be curiously instructive," and without another word he crossed the hall and, a moment later, entered his car.

"Swank!" murmured Inspector Carfon angrily, as he watched Tims swing the car down the drive at a dangerous rate of speed, "pure, unadulterated, brain-rotting swank," and he in turn passed down the drive, determined to let Malcolm Sage see what he could do "on his own."