“Yes; I think I have found the way of bringing Dr. Zabriskie to himself.”

Astonished beyond measure, so little did these words harmonize with the impressions and conclusions at which he had just arrived, something very like doubt spoke in his voice as he answered with the simple exclamation:

“You do!”

“Yes. He is obsessed by a fixed idea, and must be given an opportunity to test the truth of that idea. The shock of finding it a false one may restore him to his normal condition. He believes that he shot Mr. Hasbrouck with no other guidance than his sense of hearing. Now if it can be proved that his hearing is an insufficient guide for such an act (as of course it is) the shock of the discovery may clear his brain of its cobwebs. Mrs. Zabriskie thinks so, and the police—”

“What’s that? The police?”

“Yes, Dr. Zabriskie would be taken before them again this morning. No entreaties on the part of his wife would prevail; he insisted upon his guilt and asked her to accompany him there; and the poor woman found herself forced to go. Of course he encountered again the same division of opinion among the men he talked with. Three out of the four judged him insane, which observing, he betrayed great agitation and reiterated his former wish to be allowed an opportunity to prove his sanity by showing his skill in shooting. This made an impression; and a disposition was shown to grant his request then and there. But Mrs. Zabriskie would not listen to this. She approved of the experiment but begged that it might be deferred till another day and then take place in some spot remote from the city. For some reason they heeded her, and she has just telephoned me that this attempt of his is to take place tomorrow in the New Jersey woods. I am sorry that this should have been put through without you; and when I tell you that the idea originated with me—that from some word I purposely let fall one day, they both conceived this plan of ending the uncertainty that was devouring their lives, you will understand my excitement and the need I have of your support. Tell me that I have done well. Do not show me such a face—you frighten me—”

“I do not wish to frighten you. I merely wish to know just who are going on this expedition.”

“Some members of the police, Dr. Zabriskie, his wife, and—and myself. She begged—”

“You must not go.”

“Why? The affair is to be kept secret. The doctor will shoot, fail—Oh!” she suddenly broke in, alarmed by his expression, “you think he will not fail—”