“I did so in the last case.”

“Why not in the others? It strikes me——”

“Stop a moment,” Doctor Devoll interrupted, lurching forward in his chair. “I run this institution, Mr. Blaisdell, and I’m not going to be bothered in this way nor have my conduct picked to pieces by the police. When another case turns up, I would advise your having her taken to headquarters. You then can call another physician. Get him to restore her. He may know more than I.

“You can hold the girl, charge her with something, frame her up in any way you like, which is quite in a line with police methods, and, perhaps, you can force her to impart all the information you want. I know no other way by which you can learn the truth.”

Doctor Devoll arose with the last, signifying that he would not prolong the interview. Carter had let him run on without interrupting, noting his impatience and a more threatening shrillness in his voice. He decided not to question him further. He arose and took his hat, saying with ominous quietude:

“There is another way, Doctor Devoll, and I shall find it. I’m going to dig out the whole truth, not only in these cases, but also in the sudden mysterious death of Gaston Todd. There is, I now feel sure, quite a close relation between all of these cases and the many mysterious robberies that have recently been committed in Madison. I want the whole truth, Doctor Devoll, and I’m out to get it. Take it from me—I’ll find the way.”

“I wish you much success.” Doctor Devoll’s thin lips took on a rather sardonic smile. “I wish you much and speedy success, Mr. Blaisdell. This way, sir, if you are going. Call again. I shall be interested to know how you succeed and to learn the true inwardness of these mysteries. Ah, here is my man. Show Mr. Blaisdell the way, Shannon, if you please. Call again, sir; call again.”

“Thank you. I think it highly probable,” said Carter, with singular dryness.

Doctor Devoll bowed, still smiling, and closed the door, to which he had accompanied the detective.

Nick Carter followed Shannon out by the way he had entered, departing without so much as a word to the burly attendant. There was a suspicious gleam in the latter’s eyes, however, while he watched the departing detective through one of the office windows. Turning abruptly, as if hit with a sudden idea, he closed the office door and then called up the police headquarters by telephone.