Twenty-five dollars a day will generally hire the best of them, and they are well worth it.
The detective business swarms with men of doubtful honesty and morals, who are under a constant temptation to charge for services not rendered and expenses not incurred, who are accustomed to exaggeration if not to perjury, and who have neither the inclination nor the ability to do competent work.
Once they get their clutches on a wealthy client, they resemble the shyster lawyer in their efforts to bleed him by stimulating his fears of publicity and by holding out false hopes of success, and thus prolonging their period of service.

An unscrupulous detective will, almost as a matter of course, work on two jobs at once and charge all his time to each client.

He will constantly report progress when nothing has been accomplished, and his expenses will fill pages of his notebook.

Meantime his daily reports will fall like a shower of autumn leaves.

In no profession is it more essential to know the man who is working for you.
If you need a detective, get the best you can find, put a limit on the expense, and give him your absolute confidence..