But the doctor, goaded by this last sting, had roused himself. “I have not forgotten,” said he. “I forget nothing; not even the slight discoloration which always disfigured Ephraim Earle’s left eye, and which is absent from yours. But I do not know the exact cause of Mrs. Earle’s death. I never knew. If you were her husband, you would remember that I several times declared I was working in the dark, and even after she was dead acknowledged myself to have failed in my diagnosis, and wished you had called down physicians from Boston.”

“Oh, I remember; but I was not deceived then by your humility, nor am I deceived by it now, I will have her body dug up. I will—”

“Oh, no! no!” shrieked Polly, thrusting out her hands before her eyes. “I—cannot—bear—this. I—I do not think the doctor can bear this. Look at him! He is not sane! He——”

“Hush, Polly! I am sane enough,” came from the doctor with a sternness which was but the result of his overpowering emotion. “If I show agitation it is because dreadful memories have been awakened and because I must yet press hard against this most audacious man. Fellow! where do you think the money came from which you have been expending so freely to keep yourself out of jail?”

“Ah! that is another small mystery with which I have thought it best not to concern myself.”

But even while speaking he drew back, and a change passed over his bold countenance. Looking at the doctor with a strange and lingering gaze, he darted to a small rack at the end of the hall, and, tearing down a cloak and an old slouch hat, he thrust the one upon the doctor’s head and the other about his shrinking shoulders. Then he drew back and surveyed him. Suddenly he struck his forehead, and a triumphant smile, which was not without an evil glare in it, lit up his features.

“Of course!” he cried, “I might have known it! You are the fellow who visited the Chicago hospital that night and who——”

“And you are No. Thirteen!” was the quick response; “the man given over for dead! Oh, I see how you came to be here. Rascal! Villain!”

“Doctor, allow me to return the compliment. Why did you use such subterfuges to transfer a fortune into my daughter’s hands? Was it from a good motive or because you felt yourself guilty of her parent’s death, and so sought to make amends without awakening suspicion?”

“I should have whispered ten thousand dollars into your ear instead of one,” muttered the doctor, lost in contemplation of the other’s duplicity.