"I know plenty," said the Saint. "Let's take a cab."
He straightened up off the wall. For a moment Corrio looked as if he would pin him back there, but Fernack's intent interest countermanded the movement without speaking or even looking at him. Fernack was puzzled and disturbed, but somehow the Saint's quiet voice and unsmiling eyes told him that there was something there to be taken seriously. He stepped back, and Simon walked past him unhindered and opened the door of a taxi standing by the curb.
"Where are we going to?" Fernack asked, as they turned south down Fifth Avenue.
The Saint grinned gently and settled back in "his corner with his cigarette. He ignored the question.
"Once upon a time," he said presently, "there was a smart detective. He was very smart because after some years of ordinary detecting he had discovered that the main difficulty about the whole business was that you often have to find out who committed a crime, and since criminals don't usually leave their names and addresses behind them this is liable to mean a lot of hard work and a good many disappointments. Besides which, the pay of a police lieutenant isn't nearly so big as that amount of brainwork seems to deserve. So this guy, being a smart fellow, thought of a much simpler method, which was more or less to persuade the criminals to tell him about it themselves. Of course, he couldn't arrest them even then, because if he did that they might begin to suspect that he had some ulterior motive; but there were plenty of other ways of making a deal out of it. For instance, suppose a crook got away with a tidy cargo of loot and didn't want to put it away in the refrigerator for icicles to grow on; he could bring his problem to our smart detective, and our smart detective could think it over and say, 'Well, Elmer, that's pretty easy. All you do is just go and hide this loot in an ash can on Second Avenue or hang it on a tree in Central Park, or something like that, and I'll do a very smart piece of detecting and find it. Then I'll collect the reward and we'll go shares in it.' Usually this was pretty good business for the crook, the regular fences being as miserly as they arc, and the detective didn't starve on it either. Of course the other detectives in the bureau weren't so pleased about it, being jealous of seeing this same guy collecting such a lot of credits and fat insurance company checks; but somehow it never seemed to occur to them to wonder how he did it."
He finished speaking as the taxi drew up at an apartment hotel near the corner of East Twelfth Street.
Fernack was sitting forward, with his jaw square and hard and his eyes fixed brightly on the Saint's face.
"Go on," he said gruffly.
Simon shook his head and indicated the door.
"We'll change the scene again."