But with years of training the best material makes few real detectives, and the real detective remains in fact the man who sits at the mahogany desk in the central office and presses the row of mother of pearl buttons in front of him.
If you know the heads or superintendents of the large agencies you will find that the "star" cases, of which they like to talk, are, for the most part, the pursuit and capture of forgers and murderers.

The former, as a rule, are "spotted" and "trailed" to their haunts, and when sufficient evidence has been obtained the police are notified, and a raid takes place, or the arrest is made, by the State authorities.
In the case of a murderer, in a majority of cases, his capture is the result of skilful "roping" by an astute detective who manages to get into his confidence.

For example, a murder is committed by an Italian miner.

Let us suppose he has killed his "boss," or even the superintendent or owner.

He disappears.