That is their business, you know, to manufacture it.

You may uncover a six-dollar operative, Mrs.Douglas, but are you the equal of a twenty-dollar-a-day investigator ?" The woman looked genuinely scared.

Evidently Constance knew some things she didn't know, at least about detectives.
"You--you don't think there is anything like that, do you ?" she asked anxiously.
"Well," replied Constance slowly to impress her, "I saw your friend, Mrs.Murray, after you had left the Vanderveer, talking to a detective whom I have every reason to fear as one of the most unscrupulous in the game." "Oh, that is impossible!" persisted Mrs.Douglas.
"Not a bit of it," pursued Constance.

"Think it over for a moment.

Who would be the last person a man or woman would suspect of being a detective?
Why, just such an attractive young woman, of course.