She saw the effect and smiled.

“I do not recognize you, madam,” said Nick Carter. “If ever I met you before I have certainly forgotten it, and it is hardly possible that one would forget such a face as yours.”

“For the present call me Mignon.”

“Well, Mignon, what can I do for you?” The officer smiled. “I can’t do much for myself just at present.”

“What’s this?” exclaimed the woman, starting forward and snatching a phial from a small table at the side of the bed.

“Medicine; the doctor sent it here but a few minutes ago,” answered the detective. “I was just about to take a spoonful, when you were announced.”

“You have not taken any of it; you are sure?”

Such was the intensity of her manner and her nervousness that the detective started.

“No,” he replied; “but why do you ask? The physician attending me would not send me anything wrong; he is one of the foremost in his profession.”

“Thank God you did not take it!” Mignon cried. “Your physician did not send you that. A few drops of it would cause your death in the most horrible agony. No antidote would save you.”