“Then you can rely upon it she is ‘onto his curves,’ all right.”

“She is—what?”

“She knows the man and his methods. No matter how good he is, he is no good so far as she is concerned.”

“What, then, would you do, Carter? I am quite willing to take any suggestion from you that you can make.”

“Very well, then, I will make this one. I’ll take the job of trailing that woman myself.”

“You, Carter?”

“Yes.”

“For me? For this department?”

“Certainly; only, if I do that—for you, and not wholly for myself—you must call off your own men and leave it all to me alone.”

For the fraction of a moment the chief hesitated. Then a quiet smile stole across his face, and he replied: