“An idiot—literally?” he asked.

Vanderpool nodded.

“There seems to be no doubt about it, unfortunately,” he said. “A second operation was performed several days ago—on his head. I shall send for my X-ray apparatus at once, and until the photographs are developed—which will be done with all possible speed—I cannot, of course, speak with authority. The evidences of the operation are unmistakable, however, and his distressing symptoms alone are sufficient to show, in general, what has happened. Carter, one of the most powerful of our money kings lies there in that room, conscious but bereft of all real intelligence. I believe he would play with a doll if you gave it to him—or a bright-colored ball. And yet it isn’t enough to say that he has only the mind of a child. That wouldn’t be fair to the children, unless one had reference only to newborn babies. Heaven help him, his is now only the mind of the imbecile—or, in other words, no mind at all that is worthy of the name!”

“Is it possible?”

“It is more than that—it is true, man! That monster has stolen more—infinitely more—than all of Baldwin’s wealth: he has stolen part of his brain—and no power on earth can restore it!”

Words were powerless to express the detective’s horror of the crime. His face showed the depth of his feelings, however, as well as of his determination to bring the merciless surgeon to justice.

“And the eyes?” he asked, after a pause.

“Oh, Grantley has kept his promise, curse him! That only makes it seem worse. He has played to his heart’s content with one of the most precious lives we have to-day. The devilish irony of it! He has given Baldwin his sight, collected his huge fee—and then reduced his patient to a mere brainless hulk! The villainy of it almost passes belief!”

Nick could only agree, his blood running cold at the thought. The next moment it surged feverishly through his veins. He vowed to catch Grantley and his accomplices again if it should be his last act on earth.

He waited to hear no more, but sought the telephone and called up police headquarters. One of the deputy commissioners was on duty at the time, and Nick soon had the satisfaction of being assured that all of the machinery of the department would be put into motion at once.