“I suppose you don’t know whether Dr. Thorndyke does really look on him with any suspicion? To me the idea is preposterous. Indeed, I find it impossible to believe that there was any crime at all. I am convinced that poor Harold was the victim of some strange accident.”

“I quite agree with you, Barbara. That is exactly my own view. But I don’t think it is Thorndyke’s. As to whom he suspects—if he suspects anybody—I have not the faintest idea. He is a most extraordinarily close and secretive man. No one ever knows what is in his mind until the very moment when he strikes. And he never does strike until he has his case so complete that he can take it into court with the certainty of getting a conviction, or an acquittal, as the case may be.”

“But I suppose there are mysteries that elude even his skill?”

“No doubt there are; and I am not sure that our mystery is not one of them. Even Thorndyke can’t create evidence, and as he pointed out to me, the evidence in our case lies in the past and is mostly irrecoverable.”

“I hope it is not entirely irrecoverable,” said she; “for until some reasonable solution of the mystery is reached, an atmosphere of suspicion will continue to hang about all the inmates of that house. So let us wish Dr. Thorndyke his usual success; and when he has proved that no one was guilty—which I am convinced is the fact—perhaps poor Tony will forgive him.”

With this, we dismissed the subject, and, getting up from the seat, made our way out of the gardens just as the sun was setting behind the trees, and went in search of a suitable tea-shop. And there we lingered gossiping until the evening was well advanced and it was time for me to see Barbara home to her flat and betake myself to Fig Tree Court and make some pretence of doing an evening’s work.

Chapter XII.
Thorndyke Challenges the Evidence

My relations with Thorndyke were rather peculiar and a little inconsistent. I had commissioned him, somewhat against his inclination, to investigate the circumstances connected with the death of Harold Monkhouse. I was, in fact, his employer. And yet, in a certain subtle sense, I was his antagonist. For I held certain beliefs which I, half-unconsciously, looked to him to confirm. But apparently he did not share those beliefs. As his employer, it was clearly my duty to communicate to him any information which he might think helpful or significant, even if I considered it irrelevant. He had, in fact, explicitly pointed this out to me; and he had specially warned me to refrain from sifting or selecting facts which might become known to me according to my view of their possible bearing on the case.

But yet this was precisely what I felt myself constantly tempted to do; and as we sat at lunch in his chambers on the day after my visit to Barbara, I found myself consciously suppressing certain facts which had then come to my knowledge. And it was not that those facts appeared to me insignificant. On the contrary, I found them rather surprising. Only I had the feeling that they would probably convey to Thorndyke a significance that would be erroneous and misleading.

There was, for instance, the appearance of Wallingford in Kensington Gardens. Could it have been sheer chance? If so, it was a most remarkable coincidence; and one naturally tends to look askance at remarkable coincidences. In fact, I did not believe it to be a coincidence at all. I felt little doubt that Wallingford had been lurking about the neighbourhood of Barbara’s flat and had followed us, losing sight of us temporarily, when we turned into the by-path. But, knowing Wallingford as I did, I attached no importance to the incident. It was merely a freak of an unstable, emotional man impelled by jealousy to make a fool of himself. Again, there was Wallingford’s terror of Thorndyke and his ridiculous delusions on the subject of the “shadowings.” How easy it would be for a person unacquainted with Wallingford’s personality to read into them a totally misleading significance! Those were the thoughts that drifted half-consciously through my mind as I sat opposite my friend at the table. So, not without some twinges of conscience, I held my peace.