the key," he said, producing it from his jacket pocket. "I told him to allow no one into the room."
"Why were you there?" Malcolm Sage suddenly looked up, flashing that keen, steely look through his gold-rimmed spectacles that many men had found so disconcerting. "Ordinary visit?" he queried.
"No." Sir James paused, apparently deliberating something in his own mind. He was well acquainted with Malcolm Sage's habit of asking apparently irrelevant questions.
"There's been a little difficulty between Challoner and his nephew," he said slowly. "Some days back the boy announced his determination of marrying a girl he had met in London, a typist or secretary. Challoner was greatly upset, and threatened to cut him out of his will if he persisted. There was a scene, several scenes in fact, and eventually I was sent for as Challoner's oldest friend."
"To bring the nephew to reason," suggested Malcolm Sage.
"To give advice ostensibly; but in reality to talk things over," was the reply.
"You advised?" When keenly interested, Malcolm Sage's questions were like pistol-shots.
"That Challoner should wait and see the girl."
"Did he?"
Malcolm Sage was intent upon outlining his hand with the point of the paper-knife upon the blotting pad.
Again Sir James hesitated, only for a fraction of a second, however.
"Yes; but unfortunately with the object of endeavouring to buy her off. Yesterday afternoon Dane brought her over. Challoner saw her alone. She didn't stay more than a quarter of an hour. Then she and Dane left the house together, he to see her to the station. An hour later he returned. I was in the hall at the time. He was in a very excited state. He pushed past me, burst into the library, banging the door behind him.
"That evening at dinner Challoner told me there had been a very unpleasant scene. He had warned the boy that unless he apologised to-day he would telephone to London for his lawyer, and make a fresh will entirely disinheriting him. Soon after the interview Dane went out of the house, and apparently did not return until late—as a matter of fact, after I had gone to bed. I was feeling tired and said 'good night' to Challoner about half-past ten in the library."
For some time Malcolm Sage gazed upon the outline he had completed, as if in it lay the solution of the mystery.
"It's a pity you let the butler unlock the door," he remarked regretfully.
Sir James looked across at his late chief-of-staff keenly. He detected something of reproach in his tone.
"Did you happen to notice if the electric light was on when you entered the library?"
"No," said Sir James, after a slight pause; "it was not."
Malcolm Sage reached across to the private telephone and gave the "three on the buzzer" that always galvanised Miss Gladys Norman into instant vitality.
"Miss Norman," said Sage as she entered, "can you lend me the small mirror I have seen you use occasionally?"
"Yes, Mr. Sage," and she disappeared, returning a moment later with the mirror from her handbag. She was accustomed to Malcolm Sage's strange requests.
"Feeling better?" he enquired as she turned to go.
"I'm all right now," she smiled, "and please don't send me home, Mr. Sage," she added, and she went out before he had time to reply.
A quarter of an hour later the two men entered Sir James's car, whilst Thompson and Dawkins, the official photographer to the Bureau, followed in that driven by Tims. Malcolm Sage would cheerfully have sacrificed anybody and anything to serve his late chief.
"And how am I to keep the shine off my nose without a looking-glass, Johnny?" asked Miss Norman of William Johnson, as she turned to resume her work.
"He won't mind if it shines," said the youth seriously; and Miss Norman gave him a look, which only his years prevented him from interpreting.
II
As the car drew up, the hall-door of "The Cedars" was thrown open by the butler, a fair-haired clean-shaven man of about forty-five, with grave, impassive face, and eyes that gave the impression of allowing little to escape them.
As he descended the flight of stone-steps to open the door of the car, a young man appeared behind him. A moment later Sir James was introducing him to Malcolm Sage as "Mr. Richard Dane."
Dark, with smoothly-brushed hair and a toothbrush moustache, he might easily have been passed over in a crowd without a second glance. He was obviously and acutely nervous. His fingers moved jerkily, and there were twitchings at the corners of his mouth that he seemed unable to control. It was not a good-tempered mouth. He appeared unconscious of the presence of Malcolm Sage. His eyes were fixed upon the second car, which had just drawn up, and from which Thompson and Dawkins were removing the photographic paraphernalia.
Peters conducted Sir James and Malcolm Sage to the dining-room, where luncheon was laid.
"Shall I serve luncheon, Sir James?" he enquired, ignoring Dane, who was clearly unequal to the strain of the duties of host.
Sir James looked across at Malcolm Sage, who shook his head.
"I'll see the library first," he said. "Sir James will show me. Fetch Dawkins," he said to Thompson, and he followed Sir James through the house out on to the lawn.
As they entered the library by the French-windows, a tall, sandy man rose from the armchair in which he was seated. He was Inspector Gorton of the Sussex County Constabulary. Malcolm Sage nodded a little absently. His eyes were keenly taking in every detail of the figure sprawling across the writing-table. The head rested on the left cheek, and there was an ugly wound in the right temple from which blood had dripped and congealed upon the table. In the right hand was clutched a small, automatic pistol. The arm was slightly curved, the weapon pointing to the left.
Having concluded his examination of the wound, Malcolm Sage drew a silk-handkerchief from his pocket, shook out its folds and spread it carefully over the blood-stained head of Mr. Challoner.
Sir James looked across at him, appreciation in his eyes. It was one of those little human touches, of which he had discovered so many in Malcolm Sage, and the heads of government departments in Whitehall so few.
Malcolm Sage next proceeded to regard the body from every angle, even going down on his knees to see the position of the legs beneath the table. He then walked round the room and examined everything with minute attention, particularly the key of the door, which Sir James had replaced in its position on the inside. The keyhole on both sides of the door came in for careful scrutiny.
He tried the door of a small safe at the far-end of the room; it was locked. He then examined the fastenings of the French-windows.
Finally he returned to the table, where, dropping on one knee on the left-hand side of the body, he drew a penknife from his pocket, and proceeded with great care and deliberation to slit up the outer seam of the trousers so that the pocket lay exposed.
This in turn he cut open, taking care not to disturb the bunch of keys, which, attached to a chain,
