"Acting, ma'am, acting!" was his laconic comment. "A very uncommon character, that of Mr. Howard Van Burnam. I do not think you do it full justice."

"Perhaps not, but see that you don't slight mine. I do not expect you to heed these suggestions any more than you did those I offered you in connection with Mrs. Boppert, the scrub-woman; but my conscience is eased by my communication, and that is much to a solitary woman like myself who is obliged to spend many a long hour alone with no other companion."

"Something has been accomplished, then, by this delay," he observed. Then, as if ashamed of this momentary display of irritation, he added in the genial tones more natural to him: "I don't blame you for your good opinion of this interesting, but by no means reliable, young man, Miss Butterworth. A woman's kind heart stands in the way of her proper judgment of criminals."

"You will not find its instincts fail even if you do its judgment."

His bow was as full of politeness as it was lacking in conviction.

"I hope you won't let your instincts lead you into any unnecessary detective work," he quietly suggested.

"That I cannot promise. If you arrest Howard Van Burnam for murder, I may be tempted to meddle with matters which don't concern me."

An amused smile broke through his simulated seriousness.

"Pray accept my congratulations, then, in advance, ma'am. My health has been such that I have long anticipated giving up my profession; but if I am to have such assistants as you in my work, I shall be inclined to remain in it some time longer."

"When a man as busy as you stops to indulge in sarcasm, he is in more or less good spirits. Such a condition, I am told, only prevails with detectives when they have come to a positive conclusion concerning the case they are engaged upon."