"Therefore, it would be unfair to this man Simcoe to assume that he is the author of the plot until so long a period has passed that it is morally certain that the boy was not stolen for the purpose of blackmail. However, we have the following suspicious circumstances: first, that, as I believe, the General was drugged by some poison of whose nature we are ignorant beyond that we read of very similar cases occurring among natives races in Africa and elsewhere. Then we have the point that no one would have had any interest in the General's death, with the exception of the man he had named as his heir in the event of the child's death. We know by the man's statement that he was for many years living among tribes where poisons of this kind are used by the wizards and fetich men to support their authority and to remove persons against whom they have a grudge. Lastly, we have the crowning fact of the abduction of the child, who stood between this man and the estates. All this is at best mere circumstantial evidence. We do not know for certain what caused the General's fit, we have no proof that Simcoe had any hand in the abduction, and whatever our opinion may be, it is absolutely necessary that we do not breathe a hint to anyone."
Hilda did not speak; the shock and the horror of the matter were too much for her. She sat with open lips and blanched face, looking at Dr. Leeds. Netta, however, leaped to her feet again.
"It must be so, Dr. Leeds. It does not seem to me that there can be a shadow of doubt in the matter, and anything that I can do to bring the truth to light I will do, however long a time it takes me."
"Thank you, Netta," Hilda said, holding out her hand to her friend; "as for me, I will devote my life to clearing up this mystery."
"I am afraid, Miss Covington, that my engagements henceforth will prevent my joining actively in your search, but my advice will always be at your service, and it may be that I shall be able to point out methods that have not occurred to you."
"But, oh, Dr. Leeds!" Hilda exclaimed suddenly; "if this villain poisoned my uncle, surely he will not hesitate to put Walter out of his path."
"I have been thinking of that," Dr. Leeds exclaimed, "but I have come to the conclusion that it is very unlikely that he will do so. In the first place, he must have had accomplices. The man who spoke to the nurse and the cabman who drove the child away must both have been employed by him, and I have no doubt whatever that the child has been placed with some persons who are probably altogether ignorant of his identity. Walter was a lovable child, and as soon as he got over his first grief he would no doubt become attached to the people he was with, and although these might be willing to take a child who, they were told, had lost its parents, and was homeless and friendless, without inquiring too closely into the circumstances, it is unlikely in the extreme that they would connive at any acts of violence. It is by no means easy to murder and then to dispose of the body of a child of seven, and I should doubt whether this man would attempt such a thing. He would be perfectly content that the boy would be out of his way, that all traces of him should be lost, and that it would be beyond the range of probability that he could ever be identified, and, lastly, even the most hardened villains do not like putting their necks in a noose. Moreover, if in the last extremity his confederates, believing that he had made away with the child, tried to blackmail him, or some unforeseen circumstance brought home to him the guilt of this abduction, he would be in a position to produce the child, and even to make good terms for himself for doing so. You yourself, whatever your feelings might be as to the man whom you believe to be the murderer of your uncle, would still be willing to pay a considerable sum and allow him to leave the country, on condition of his restoring Walter. Therefore I think that you may make your mind easy on that score, and believe that whatever has happened to him, or wherever he may be, there is no risk of actual harm befalling him."
"Thank you very much, doctor. That is indeed a relief. And now have you thought of any plan upon which we had best set to work?"
"Not at present, beyond the fact that I see that the power you both possess of reading what men say, when, as they believe, out of earshot, ought to be of material advantage to you. As Miss Purcell has promised to associate herself with you in the search, I should say that she would be of more use in this direction than you would. You have told me that he must be perfectly aware of your dislike for him, and would certainly be most careful, were you in his presence, although he might not dream of this power that you possess. But he has never seen your friend, and would not be on his guard with her. I have at present not thought over any plan by which she could watch him—that must be for after consideration—but it seems to me that this offers some chance of obtaining a clew."
"I am ready to do anything, Dr. Leeds," Netta said firmly. "You only have to find out a way, and I will follow out your instructions to the letter. First we must find out whether Hilda's theory about this man, which I scoffed at when she first spoke of it to me, is correct."