Inspector Aylesbury ran heavily to the door.

"Sergeant!" he called, "Sergeant! keep that man in sight. He must return here immediately."

I heard the sound of heavy footsteps following Camber's up the stairs, then Inspector Aylesbury turned, a bulky figure in the open doorway, and:

"Now, Mr. Harley," said he, entering and reclosing the door, "you are a barrister, I understand. Very well, then, I suppose you are aware that you have resisted and obstructed an officer of the law in the execution of his duty."

Paul Harley spun round upon his heel.

"Is that a charge," he inquired, "or merely a warning?"

The two glared at one another for a moment, then:

"From now onward," continued the Inspector, "I am going to have no more trouble with you, Mr. Harley. In the first place, I'll have you looked up in the Law List; in the second place, I shall ask you to stick to your proper duties, and leave me to look after mine."

"I have endeavoured from the outset," replied Harley, his good humour quite restored, "to a.s.sist you in every way in my power. You have declined all my offers, and finally, upon the most flimsy evidence, you have detained a perfectly innocent man."

"Oh, I see. A perfectly innocent man, eh?"

"Perfectly innocent, Inspector. There are so many points that you have overlooked. For instance, do you seriously suppose that Mr. Camber had been waiting up here night after night on the off-chance that Colonel Menendez would appear in the grounds of Cray's Folly?"

"No, I don't. I have got that worked out."

"Indeed? You interest me."

"Mr. Camber has an accomplice at Cray's Folly."

"What?" exclaimed Harley, and into his keen grey eyes crept a look of real interest.

"He has an accomplice," repeated the Inspector. "A certain witness was strangely reluctant to mention Mr. Camber's name. It was only after very keen examination that I got it at last. Now, Colonel Menendez had not retired last night, neither had a certain other party. That other party, sir, knows why Colonel Menendez was wandering about the garden at midnight."

At first, I think, this astonishing innuendo did not fully penetrate to my mind, but when it did so, it seemed to galvanize me. Springing up from the chair in which I had been seated:

"You preposterous fool!" I exclaimed, hotly.

It was the last straw. Inspector Aylesbury strode to the door and throwing it open once more, turned to me:

"Be good enough to leave the house, Mr. Knox," he said. "I am about to have it officially searched, and I will have no strangers present."

I think I could have strangled him with pleasure, but even in my rage I was not foolhardy enough to lay myself open to that of which the Inspector was quite capable at this moment.

Without another word I walked out of the study, took my hat and stick, and opening the front door, quitted the Guest House, from which I had thus a second time been dismissed ignominiously.

Appreciation of this fact, which came to me as I stepped into the porch, awakened my sense of humour-a gift truly divine which has saved many a man from desperation or worse. I felt like a schoolboy who had been turned out of a cla.s.s-room, and I was glad that I could laugh at myself.

A constable was standing in the porch, and he looked at me suspiciously. No doubt he perceived something very sardonic in my merriment.

I walked out of the gate, before which a car was standing, and as I paused to light a cigarette I heard the door of the Guest House open and close. I glanced back, and there was Paul Harley coming to join me.

"Now, Knox," he said, briskly, "we have got our hands full."

"My dear Harley, I am both angry and bewildered. Too angry and too bewildered to think clearly."

"I can quite understand it. I should become homicidal if I were forced to submit for long to the company of Inspector Aylesbury. Of course, I had antic.i.p.ated the arrest of Colin Camber, and I fear there is worse to come."

"What do you mean, Harley?"

"I mean that failing the apprehension of the real murderer, I cannot see, at the moment, upon what the case for the defence is to rest."

"But surely you demonstrated out there in the garden that he could not possibly have fired the shot?"

"Words, Knox, words. I could pick a dozen loopholes in my own argument. I had only hoped to defer the inevitable. I tell you, there is worse to come. Two things we must do at once."

"What are they?"

"We must persuade the man on duty to allow us to examine the Tudor garden, and we must see the Chief Constable, whoever he may be, and prevail upon him to requisition the a.s.sistance of Scotland Yard. With Wess.e.x in charge of the case I might have a chance. Whilst this disastrous man Aylesbury holds the keys there is none."

"You heard what he said about Miss Beverley?"

We were now walking rapidly along the high road, and Harley nodded.

"I did," he said. "I had expected it. He was inspired with this brilliant idea last night, and his ideas are too few to be lightly sc.r.a.pped. If the Chief Constable is anything like the Inspector, what we are going to do heaven only knows."

"I take it, Harley, that you are convinced of Colin Camber's innocence?"

Harley did not answer for a moment, whereupon I glanced at him anxiously, then:

"Colin Camber," he replied, "is of so peculiar a type that I could not presume to say of what he is capable or is not capable. The most significant point in his favour is this: He is a man of unusual intellect. The planning of this cunning crime to such a man would have been child's play-child's play, Knox. But is it possible to believe that his genius would have failed him upon the most essential detail of all, namely, an alibi?"

"It is not."

"Of course it is not. Which, continuing to regard Camber as an a.s.sa.s.sin, reduces us to the theory that the crime was committed in a moment of pa.s.sion. This I maintain to be also impossible. It was no deed of impulse."

"I agree with you."

"Now, I believe that the enquiry is going to turn upon a very delicate point. If I am wrong in this, then perhaps I am wrong in my whole conception of the case. But have you considered the ma.s.s of evidence against Colin Camber?"

"I have, Harley," I replied, sadly, "I have."

"Think of all that we know, and which the Inspector does not know. Every single datum points in the same direction. No prosecution could ask for a more perfect case. Upon this fact I pin my hopes. Where an Aylesbury rushes in I fear to tread. The a.n.a.logy with an angel was accidental, Knox!" he added, smilingly. "In other words, it is all too obvious. Yet I have failed once, Knox, failed disastrously, and it may be that in my anxiety to justify myself I am seeking for subtlety where no subtlety exists."

CHAPTER XXV

AYLESBURY'S THEORY

There were strangers about Cray's Folly and a sort of furtive activity, horribly suggestive. We had not pursued the circular route by the high road which would have brought us to the lodge, but had turned aside where the swing-gate opened upon a footpath into the meadows. It was the path which I had pursued upon the day of my visit to the Lavender Arms. A second private gate here gave access to the grounds at a point directly opposite the lake; and as we crossed the valley, making for the terraced lawns, I saw unfamiliar figures upon the veranda, and knew that the c.u.mbersome processes of the law were already in motion.

I was longing to speak to Val Beverley and to learn what had taken place during her interview with Inspector Aylesbury, but Harley led the way toward the tower wing, and by a tortuous path through the rhododendrons we finally came out on the northeast front and in sight of the Tudor garden.

Harley crossed to the entrance, and was about to descend the steps, when the constable on duty there held out his arm.